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43results about How to "Avoid problems such as falling off" patented technology

Arial septostomy device, atrial septostomy system and operation method of atrial septostomy system

The invention discloses an atrial septostomy device, an atrial septostomy system and an operation method of the atrial septostomy system. The atrial septostomy device comprises a stoma body which canbe radially expanded, and a stoma part which is used for penetrating through an atrial septum and being radially expanded to open atrial septum tissue is arranged on the stoma body; at least one circle of electricity conducting part is arranged on the outer surface of the stoma part in the circumferential direction, the electricity conducting parts are electrically connected with a melting power supply and a control mechanism, and the electricity conducting parts conduct electricity at least on the surfaces where the electricity conducting parts make contact with the atrial septum. The atrialseptostomy system at least comprises the atrial septostomy device, the melting power supply and the control device. The atrial septostomy device can be recycled, tissue cutting is not needed, and embolism is not likely to be formed.
Owner:HANGZHOU NOYA MEDTECH CO LTD

Silver-bearing ntimicrobial dressing and preparation method thereof

The invention discloses a silver-bearing ntimicrobial dressing and a preparation method thereof. The preparation method comprises the following preparation steps: 1) dropwise adding a chloride ion brine solution in a polysaccharide solution; 2) uniformly mixing a silver nitrate water solution with the solution obtained from the step 1); 3) reacting under optical excitation; 4) uniformly mixing the liquid obtained from the step 3) with a natural macromolecular solution, and performing pre-freezing and freeze-drying; 5) cutting, packing and sterilizing. The mechanical property of the dressing is improved through selection and proportion of natural polymers, and the degradation rate of the dressing is adjusted. Since being protected by the natural polymers, the dressing has the advantages that the nanostructure is uniform in dispersion, the stability is good, the sterilizing speed is high, and silver ions are continuously and stably released. The natural polymers are taken as a base material, and have the three-dimensional porous structure characteristics, so that when exerting the sterilizing function, the dressing has good hygroscopicity, degradability and biocompatibility. The product prepared according to the preparation method can be used for clinically treating skin defective infection caused by various reasons.
Owner:INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI

Lead dioxide electrode and preparing method thereof

InactiveCN1635183APrevent plating from peeling offSolve poor mechanical strengthElectrodesPolypropyleneCorrosion
The invention belongs to electrochemistry technology field, relates to a lead dioxide electric pole and preparation method thereof. The electric pole is made of lead dioxide powder and poly-4-oxyethylene or polypropylene particles in a certain mass ratio by mixing and pressing them. The invention is a no-basal body preparation method, solves the problem of coating pull-off radically. The electric pole has advantages of high mechanical strength, high corrosion resistance, high electrochemical activity and simple preparation technique.
Owner:FUDAN UNIV

Hollowing-resistant construction process of polished brick

The invention discloses a hollowing-resistant construction process of a polished brick. The hollowing-resistant construction process of the polished brick disclosed by the invention comprises the following steps of: (1), processing a basic layer: cleaning the surface of the basic layer; (2), snapping a control line; (3), brushing an interface agent: brushing an interface processing agent at the back of the polished brick, and naturally airing: (4), paving cement gum: uniformly smearing modified mortar or cement gum special for the polished brick on the surface of the basic layer so as to form an adhesive layer; (5), paving the brick: kneading the processed polished brick on the adhesive layer, and beating the surface of the polished brick by using a rubber hammer from top to bottom, so that the polished brick is stuck with the adhesive layer to the most extent; (6), adjusting, pointing and cleaning; and (7), maintaining: maintaining by watering after paving the polished brick for 24 h. According to the invention, the adhesive strength among various layers of materials can be increased; and the problems, such as hollowing and falling off of the surface layer, can be avoided.
Owner:ZHEJIANG SHENMEI DECORATION ENG

Catalyst carbide carrier and its preparation method, regular catalyst and its preparation method

The present invention discloses regular netted porous carbide carrier suitable for catalyst and its preparation process as well as the regular photocatalyst supported with the carrier and its preparation process. The carbide carrier may be prepared directly on the supporter and has firm adhesion, high mechanical strength and high adsorption performance. The carrier is secondarily supported through coating in easy control of the carrier carbon layer thickness, and the carbonization and activation has specific surface area and pore structure of the carbide carrier capable of being regulated in a wide range, so as to prepare carrier suitable for different catalysts. The carbide carrier supported regular photocatalyst has integrated adsorption and reaction performance, possesses high light flux and low pressure drop, and may be used in the treatment of gaseous and liquid pollutant easily.
Owner:INNER MONGOLIA UNIV OF TECH

Integral type room temperature formaldehyde oxidation catalyst and preparation method thereof

The invention discloses an integral type room temperature formaldehyde oxidation catalyst and a preparation method thereof, and relates to the fields of catalyst preparation and environmental protection. The integral type room temperature formaldehyde oxidation catalyst takes a supported noble metal catalyst as an active component, takes alkaline substances as a binding agent and an active auxiliary agent, and takes a molded honeycomb carrier as a matrix. The integral type room temperature formaldehyde oxidation catalyst is prepared by mixing the supported noble metal catalyst and the alkaline substances into a solution, then dipping the honeycomb carrier into the solution, and drying at constant temperature. The integral type room temperature formaldehyde oxidation catalyst has higher low-temperature formaldehyde catalytic oxidation activity, and can enable formaldehyde to be converted into harmless H2O and CO2 by means of catalytic oxidation under the condition of not needing other additional devices, thus removing the formaldehyde in an environment-friendly way. The preparation method is simple in technology, fewer in steps and easy to operate, thus being suitable for industrial production.
Owner:宁波智通环保科技有限公司

Cathode active material for lithium ion battery, method for preparing cathode active material and cathode and battery with cathode active material

The invention provides a cathode active material for a lithium ion battery, a method for preparing the cathode active material and a cathode and the battery with the cathode active material. The cathode active material comprises graphite particles and silicon carbon composite particles. The silicon carbon composite particles are dispersed on the surfaces of the graphite particles, and the exposed surface areas of the graphite particles account for 80%-98% of the total surface areas of the graphite particles. The cathode active material, the method, the cathode and the lithium ion battery have the advantages that the problems of cracking, falling and the like of outer-layer silicon carbon materials of composite materials with inner-layer graphite particles and outer-layer silicon carbon composite particles due to uneven expansion in charge and discharge procedures of lithium ion batteries in the prior art can be solved by the aid of the cathode active material, excellent electric contact can be maintained, and the cycle performance of the battery can be improved.
Owner:BYD CO LTD

Construction method for internal wall facing bricks

The invention discloses a construction method for internal wall facing bricks. The construction method includes the following steps that step 1, a base course is treated; step 2, leveling and line snapping are performed; step 3, the bricks are arranged in advance; step 4, the bricks are soaked; step 5, mark blocks are attached, and a splayed guiding rule is embedded; step 6, the facing bricks are inlaid; step 7, the surfaces are cleared. According to the construction method for the internal wall facing bricks, bonding strength among all mortar layers is guaranteed, and the problems of surface course hollowing, shedding and others are avoided; through arranging the bricks in advance, the appearance quality of the inlaid facing bricks is improved.
Owner:杨哲

Method of preparing high heat dissipating ceramic package substrate

The invention discloses a method of preparing a high heat dissipating ceramic package substrate. The method comprises the following steps that laser marking on ceramic substrate after cleaning is conducted to form a metallized line pattern, a mixture layer with a thickness of 0.5-30 micrometers is obtained, the mixture layer is composed of oxide and single metal; electroless copper plating is conducted in the metallized line pattern area, a bonding layer with a thickness of 0.1-50 micrometers is formed; a conductive layer with a thickness of 5-500 micrometers is plated on the bonding layer; the ceramic substrate is then sintered in a sintering furnace; finally, surface treatment of the ceramic substrate is conducted, and a ceramic package substrate with bright metal wires attached is obtained. The method directly prepares conductive lines on the ceramic substrate, the process flow is effectively simplified, the product yield and reliability are improved, and the method is a low-cost way to prepare a package substrate for a semiconductor device.
Owner:DONGGUAN INST OF OPTO ELECTRONICS PEKING UNIV

Guiding device for laying cable and optical cable

This invention relates to a pilot device for laying cables, in which, an idler wheel is mounted on the frame according to the invented design characterizing in splicing a pinch plate at a side of the bottom of the frame and a baffle extending downwards at the other side, a sleeve is connected at the outside of the baffle, a pull rod is in the sleeve, a handle is set at the outer end of the pull rod and a tongue passing through the baffle is in the inner end of the rod and a spring for resetting the rod is in the sleeve.
Owner:WUXI POWER SUPPLY JIANGSU PROVINCE ELECTRIC POWER +1

Damper and vehicle provided with damper

ActiveCN104279260AAvoid oil leakage and abnormal noiseThe clamping method is firmSpringsShock absorbersSlagVibration damper
The invention relates to the technical field of vehicles, in particular to a suspension damper and a vehicle provided with the damper, which have the advantages of good dust prevention effects and prevention of oil leakage. The damper comprises an oil storing cylinder and a dust-proof sleeve, wherein the dust-proof sleeve is made of elastic rubber; one end of the dust-proof sleeve is hermetically connected with an upper hanging ring; the other end of the dust-proof sleeve is hermetically connected with the oil storing cylinder; vent holes are formed in the dust-proof sleeve. A wrapping corrugated structure is adopted, so that particles such as welding slag and sand are effectively prevented from entering a damper oil barrel and scratching the inner wall of a working cylinder, a piston rod and an oil seal, and oil leakage, abnormal sound and the like of the damper are avoided; the two ends of the dust-proof sleeve are clamped very tightly, so that the problems of falling and the like of the dust-proof sleeve during driving are solved; the dust-proof sleeve is simple in structure and can be deviated and deflected, flexible motion of the oil storing cylinder of the damper can be realized, the dust prevention effect is further enhanced, and the service life of the damper is prolonged.
Owner:BEIQI FOTON MOTOR CO LTD

Atrial septostomy device and atrial septostomy system

The invention discloses an atrial septostomy device and an atrial septostomy system. The ostomy device includes a supporting portion, and an extension portion and an ablation portion connected to thesupporting portion; the extension portion includes a compensation extension portion for extending the length of the supporting portion and / or a positioning extension portion for positioning the supporting portion; and the ablation portion includes at least two sets of ablation members which are arranged on the supporting portion and / or the extension portion and electrically communicate with an ablation power source for ablation of atrial septal tissue, wherein the ablation member arranged on the supporting portion are arranged in a circle around the periphery of the supporting portion, and theablation members arranged on the extension portion are located around perforated holes and are attached to the atrial septal tissue after being implanted. The atrial septostomy system includes at least the atrial septostomy device and electro-conductive connectors. The device and system provided by the invention are recyclable, do not need to cut tissue, and do not easily form an embolism.
Owner:HANGZHOU NOYA MEDTECH CO LTD

Bolt-nut assembly with different colors

The invention relates to the field of aircraft manufacturing and concretely discloses a bolt-nut assembly with different colors. The bolt-nut assembly comprises a bolt part and a nut part. The bolt part comprises a threaded rod, a first gasket and a first nylon plastic part. The first gasket and the first nylon plastic part are arranged on the threaded rod in a sleeving manner. The first nylon plastic part is embedded into the first gasket in a press-fit manner and in threaded connection with the threaded rod. The nut part comprises a second gasket, a nut and a second nylon plastic part. The second gasket is embedded into the second nylon plastic part in a press fit manner. One end of the nut is embedded into a central hole of a metal gasket. The bolt-nut assembly with different colors hasthe following advantages: specifications of bolts and nuts are distinguished by different colors so that assembly speed is high; and by additionally arranging nylon plastic parts, part surfaces are prevented from being scratched.
Owner:西安市航空基地天创航空科技有限公司

Isolating membrane, preparation method of isolating membrane, and electrochemical device comprising isolating membrane

The invention relates to the field of energy storage materials, in particular to an isolating membrane, a preparation method of the isolating membrane and an electrochemical device comprising the isolating membrane. The isolating membrane comprises a base material and an inorganic layer at least arranged on one side of the base material, wherein the base material is a porous base material, and theinorganic layer is a dielectric layer which does not contain an adhesive; the thickness of the inorganic layer is 20-2000 nm; the ratio of the mass M1 of the inorganic layer to the mass M2 of the base material is M1 / M2, wherein M1 / M2 is greater than or equal to 0.05 and less than or equal to 7.5; and the interface stripping force of the inorganic layer and the base material is not lower than 30N / m. According to the isolating membrane disclosed by the invention, the ultrathin inorganic layer without the adhesive is arranged on the surface of the porous base material, so that the interface wettability and the thermal shrinkage resistance of the isolating membrane are effectively improved, certain mechanical strength is guaranteed, and the problem that the mechanical strength is lowered andthe base material is blocked caused by falling can be avoided, and the safety and the cycle life of the battery are improved and prolonged. By controlling the ranges of the M1 / M2 and the interface stripping force, the energy density is relatively high.
Owner:CONTEMPORARY AMPEREX TECH CO

Fiber continuous unloading device

The invention relates to a fiber continuous unloading device comprising a machine frame. The machine frame is provided with a conveying device, the conveying device is used for conveying fibers, the middles of the fibers are arranged on the conveying device, the two ends are arranged downwards in a hanging mode, the machine frame is provided with a moving mechanism, the moving mechanism is connected with a supporting surface, the moving mechanism can drive the supporting surface to move from the position below the conveying device to the position above the conveying device, the supporting surface makes contact with and supports the hanging sections of the fibers when moving from the position below the conveying device to the position above the conveying device, the fibers are taken out from the conveying device, and the supporting surface is provided with an area through which the conveying device passes. The structure is compact, operation is stable, fibers constantly conveyed by theconveying device can be taken out, unlading is convenient and fast, and current using requirements are met.
Owner:岳西十行机械设备有限公司

Curling display device, method for controlling curling of flexible display screen and electronic equipment

The embodiment of the invention provides a curling display device, a method for controlling curling of a flexible display screen and electronic equipment. The curling display device comprises the flexible display screen, two reels, a driving device and a processor. The first reel is arranged on one side of the flexible display screen, and the second reel is arranged on the other side, opposite tothe first reel, of the flexible display screen; the processor is configured to send a control signal for controlling the reels to work to the driving device in response to the curling trigger signal;and the driving device is configured to drive the first reel and / or the second reel to roll towards the direction where the reel on the opposite side is located under the condition that the control signal is received so as to curl the flexible display screen. According to the embodiment of the invention, the reels are additionally arranged, so that the flexible display screen can be curled leftwards or rightwards, damage to the OCA caused by stress generated in a single direction is neutralized in a mode of controlling the two reels to alternately roll through the processor, and the service life of the flexible display screen is prolonged.
Owner:BOE TECH GRP CO LTD

Split washer mounting device for double-shaft coil pipe motor

The invention discloses an installation device for an opening retaining ring for a double-axis coil motor, which includes a V-shaped table, a fixed seat, a movable column, a supporting fixture, an eccentric wheel and an opening retaining ring fixture, and the V-shaped table is fixedly installed on the base , the internal thread of the movable column is matched with the upper thread of the lead screw, the top of the movable column is fixedly installed with a support fixture; A rod, and a clip block is fixedly installed at one end of the draw rod located inside the clamp of the split retaining ring. Through the cooperation between the lead screw and the movable column, the support fixture can move up and down, so as to support the rotating shaft of various specifications of motors, and improve the versatility of the device; setting the open retaining ring fixture can prevent the open retaining ring during installation Movement occurs to avoid the difficulty of installing the split retaining ring; through this device, the split retaining rings on both sides of the double-axis motor can be installed at the same time to improve production efficiency.
Owner:苏清凉

Steel structure external wall thermal insulation mortar enclosure system with pulling element and construction process thereof

The invention provides a steel structure external wall thermal insulation mortar enclosure system with a pulling element and a construction process thereof. The steel structure external wall thermal insulation mortar enclosure system with a pulling element comprises an interface mortar layer arranged on a steel structure substrate, a bottom insulating mortar layer arranged on the interface mortarlayer, a middle insulating mortar layer arranged on the bottom insulating mortar layer, a surface insulating mortar layer arranged on the middle insulating mortar layer, an anti-cracking mortar layerarranged on the surface insulating mortar layer and a facing layer arranged on the anti-cracking mortar layer; the substrate is provided with a pulling element, the pulling element comprises a positioning strip and a positioning tooth; the end part of the positioning tooth is provided with a positioning groove; the positioning strip is used for hanging a first layer of steel wire mesh which is fixedly arranged on the bottom insulating mortar layer; the positioning groove is used for hanging a second layer of steel wire mesh which is fixedly arranged on the middle insulating mortar layer. The structure has the beneficial effects that the principle is simple, the operation is convenient, the overall construction quality of the thermal insulation system of the steel structure external wall can be improved, and better safety guarantee is provided for the steel structure external wall thermal insulation mortar enclosure system building.
Owner:HANGXIAO STEEL STRUCTURE

Anti-deformation SPC floor and preparation method

The invention relates to the technical field of floor base materials, in particular to an anti-deformation SPC floor and a preparation method. The anti-deformation SPC floor sequentially comprises a supporting base layer, a PVC hard layer, a printing decoration layer and a transparent wear-resistant layer from bottom to top; and the supporting base layer is prepared from the following components in parts by weight: 10-20 parts of cement, 5-30 parts of water, 1-10 parts of fly ash, 2-10 parts of granulated blast furnace slag and 1-5 parts of silica fume. The anti-deformation SPC floor solves the problem that in the prior art, an SPC floor base material is prone to deformation is solved. According to the anti-deformation SPC floor, the supporting base layer is additionally arranged, the supporting base layer is a hard cement base layer and has good toughness, the anti-fatigue property, the crack control impermeability and the fireproof performance of the supporting base layer are very excellent, and the SPC floor can be prevented from being deformed even if the SPC floor is treaded for a long time, so that the service life of the SPC floor is prolonged; and even if the SPC floor is used for buildings in earthquake-prone areas, the SPC floor can be effectively controlled and even prevented from being damaged under the action of earthquakes.
Owner:STARS UNION EQUIP TECH JIANGSU CO LTD

Printer core, fixing mechanism of rubber roller shaft sleeve of printer core and thermal printer

The invention discloses a printer core and a fixing mechanism of a rubber roller shaft sleeve of the printer core. The fixing mechanism of the rubber roller shaft sleeve of the printer core comprisesa left shaft sleeve seat and a right shaft sleeve seat which are located on the left side wall and the right side wall of a printer respectively, the two shaft sleeve seats are of the same structure,each shaft sleeve seat is provided with a left bottom groove and a right bottom groove, and the semicircular-opening shaft sleeve seats with upper openings are changed into three-part shaft sleeve seats with left parts, right parts and bottom parts through grooving. The left parts and the right parts are changed into elastic shaft sleeve clamping walls capable of being opened leftwards and rightwards, so that the shaft sleeve can elastically open narrow openings when passing through the narrow openings above the shaft sleeve seats, the shaft sleeve enters a working position of the shaft sleeveseats through the narrow openings under a preset pressure value, the narrow openings rebound to the original positions, and the shaft sleeve is clamped by the rebounded left and right walls to work correctly. According to the printer core and the fixing mechanism, the rubber roller shaft sleeve can be clamped by the elastic force of the three-part shaft sleeve seats without a metal elastic wire clamp spring, and the three-part shaft sleeve seats and a main bracket of the printer core are of an integrated structure, so that the problem that the traditional metal elastic wire clamp spring fallsoff during installation and use is avoided, and the cost is saved.
Owner:XIAMEN PINNACLE ELECTRICAL

Structure and heat energy recovery system of fluidized bed gasifier

The invention discloses a structure and a heat energy recovery system of a fluidized bed gasifier. The fluidized bed gasifier comprises a gasifier body, wherein the interior of the furnace gasifier isinternally divided into a heat exchange area, a dry distillation area, a gasification reduction area and a high-temperature oxidation area from top to bottom in sequence. The system comprises the gasifier, a water source, a steam pocket and a gas storage cabinet, wherein the water source communicates with the water inlet of a jacket A through a pipeline; water outlets of the jacket A and a jacketB communicate with a water inlet of the steam pocket; a water outlet of the steam pocket communicates with a water inlet of the jacket B; an air outlet of the steam pocket communicates with an air inlet of a jacket C; and the air outlet of the jacket C communicates with the air inlet of a jacket D through a pipeline. The structure of the gasifier is simple, can be easily implemented, enables theheat value of raw gas to be higher, reduces maintenance cost and guarantees the normal production of the gasifier. The system disclosed by the invention is simple in connection structure and easy to realize, realizes an automatic control function, recovers heat energy, saves the production cost of raw gas and lowers equipment investment.
Owner:XINNENG ENERGY CO LTD

Die with turn-up electromagnet pressing block

InactiveCN102886904AAvoid problems such as falling offAvoid difficulty in infiltrationGlass fiberSuction force
The invention provides a die with a turn-up electromagnet pressing block. The die comprises a product female die and a female die supporting structure. The die is characterized in that electromagnets are pre-embedded inside the turn-up edge of the product female die; the electromagnets are connected by using internal cables; a power control system is connected with the electromagnets pre-embedded inside the turn-up edge of the product female die through power supply cables; the suction force of the electromagnets can be adjusted through the power control system; the product female die is fixed inside the female die supporting structure; and the die further comprises an internal movable strong magnet pressing block for pressing glass fibers in a production process. The problems that the product die with right angle turn-up appearance is difficult to operate in a formation process for a long time, the working time is wasted, the cost is high and the product faults easily occur can be solved; the manufacturing cost is reduced; the production efficiency is improved; and the product quality is improved.
Owner:EULIKIND TIANJIN TECH

White LED chip structure and manufacturing method thereof

The invention provides a white LED chip structure and a manufacturing method thereof. At least two sub-chips are disposed on the same LED chip, each of the sub-chips comprises a substrate and an epitaxial layer formed on the substrate, an electron blocking layer and a light-emitting layer are disposed in the epitaxial layer, different sub-chips can emit light of different wavelengths with the cooperation with the light-emitting layer by setting the thickness of the electron blocking layers of different sub-chips. Compared with a traditional LED chip structure, the white light can be achieved by using a single chip, a condition that a traditional LED chip needs phosphor to realize white light is avoided, therefore, the problems of aging, falling and the like caused by the phosphor are avoided, the process is simple, the energy loss during the excitation process of the phosphor is avoided, and the luminous efficiency is higher. Compared with a mode of achieving white light by a traditional three-primary-color chip, the invention has the advantages that the white light can be achieved by using the single chip, and the manufacturing process is simpler.
Owner:BYD SEMICON CO LTD

Ultra-low liquid ratio rice sample recoloring instrument

The invention relates to an ultra-low liquid ratio rice-like colour compounding instrument. The ultra-low liquid ratio rice-like colour compounding instrument comprises a control box and a machine body, wherein the control box is fixedly connected with the machine body; a fabric guide mechanism, a transmission mechanism and a heating cooling mechanism are arranged in the machine body; the transmission mechanism drives the fabric guide mechanism to rotate; the fabric guide mechanism is arranged in a dye vat body; the heating cooling mechanism is arranged at the lower part of the dye vat part; the transmission part is arranged on the outer part of the dye vat part; the fabric guide mechanism comprises a fabric guide wheel and a fabric guide rod; the transmission mechanism comprises a fabric guide wheel motor; after a fabric enters the dye vat body through a door cover on the machine body, the fabric guide wheel drives the fabric to rotate. The ultra-low liquid ratio rice-like colour compounding instrument provided by the invention has the characteristics of batch production, no noise pollution, simple structure, low maintenance cost and convenience in actual operation, and the machine is not easily damaged.
Owner:江苏科泰印染机械技术研究中心有限公司

Gluing cardboard and processing technology thereof

The gluing clamping plate comprises a panel, three rows of supporting blocks are fixedly connected to the bottom of the panel at equal intervals, the number of the supporting blocks in each row is three, limiting columns are fixedly connected to the positions, located on the same side of the supporting blocks, of the bottom of the panel, and the distance between each limiting column and the adjacent supporting block is equal. The clamping plates are provided with the limiting columns and the limiting inserting holes capable of being inserted into the limiting columns, when the clamping plates are not used and stored in a stacked mode, the two opposite clamping plates can be in butt joint to form an opposite whole, the number of layers of the clamping plates is reduced, the situation that the bottoms of the clamping plates are stacked in a staggered mode, and consequently sideslip and toppling are caused is avoided, and the storage safety is improved; according to the technology, a plurality of feeding devices are arranged, accessories needed for splicing are sequentially installed at the bottom of a panel, a balance weight plate is released through a pressing plate feeding device arranged on a material receiving device, the balance weight plate is pressed above a clamping plate, the bonding effect between all parts of the clamping plate is improved, and the problems that the parts fall off due to the fact that glue is not dry are solved.
Owner:东莞市华易包装制品有限公司
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