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528results about How to "Not easy to fatigue" patented technology

Microwave ablation needle and microwave ablation therapeutic apparatus thereof

The invention discloses a microwave ablation needle and a microwave ablation therapeutic apparatus thereof, and relates to a structure of the microwave ablation needle and the microwave ablation therapeutic apparatus using the microwave ablation needle. The microwave ablation needle mainly comprises an ablation needle, an ablation needle tube, a microwave coaxial cable, a capillary, a handle with a crank, a temperature sensor, a fixed frame, a high-frequency joint and a water cavity, wherein the fixed frame comprises the high-frequency joint, a water inlet joint, a water outlet joint and the temperature sensor and is connected with a terminal external socket; the high-frequency joint comprises a lock card reed; and the water cavity used for circulating cold water is arranged in the handle. The circulating water enters the capillary from the water inlet joint, then enters the water cavity from the ablation needle tube, and finally flows out from the water outlet joint. The microwave energy enters the microwave coaxial cable from the high-frequency joint, and radiates through the ablation needle. The microwave ablation needle, a microwave power source and a computer control unit form the microwave ablation therapeutic apparatus. The microwave ablation needle and the microwave ablation therapeutic apparatus are mainly used for treating tumor through microwave ablation.
Owner:CANYON MEDICAL INC

Handheld tool

The invention relates to a handheld tool. The handheld tool comprises a work assembly which is used for driving a motor of the work assembly, a shell and a transmission assembly which is accommodated in the shell and transfers the power of the motor to the work assembly; the whole shell extends lengthwise; the shell comprises a shell front part which is used for arranging the work assembly and a shell rear part which is used accommodating the motor; and the shell rear part is provided with an installation part of a battery pack which provides power for the motor, and a holding part which is positioned between the shell front part and the shell rear part.
Owner:POSITEC POWER TOOLS (SUZHOU) CO LTD

Electroencephalogram identification method based on different expression drivers

The present invention discloses an electroencephalogram identification method based on different expression drivers, which is characterized in that based on cerebrophysiology knowledge, firstly, electroencephalograms generated by different face expression drivers are subjected to modeling simulation analysis; and on the basis, signal features of an Alpha wave band and a theta wave band in the electroencephalograms, which are generated on the basis of positions of four measurement points of FC5, FC6, F7 and F8 of the brain in the face expression driving process, are used as the basis of electroencephalogram classification identification for driving control of the electroencephalograms.
Owner:XI AN JIAOTONG UNIV

Indicating method of adjusting light intensity, and lighting indicating equipment

The invention relates to the field of lighting technology, and particularly relates to an indicating method of adjusting the light intensity, and lighting indicating equipment. The indicating method comprises the steps: detecting first outside environment illumination intensity and second desktop light area illumination intensity, calculating the ratio of the second desktop light area illumination intensity to the first outside environment illumination intensity, if the ratio is greater than or equal to a preset health threshold value, promoting the increase of the outside illumination light intensity. Comparing the ratio of the outside environment illumination intensity to the desktop lighting area illumination intensity with the preset health threshold value, if the ratio is greater than or equal to the preset health threshold value, people can be instructed to correctly adjust the best illumination light intensity.
Owner:GUANGDONG XIAOTIANCAI TECH CO LTD

Image processor, image display apparatus, and image taking apparatus

Disclosed is an image processor generating a three-dimensional image easily three-dimensionally viewed by, and hardly causing fatigue of, an observer, and easily adjusting a three-dimensional effect of an arbitrary portion in the three-dimensional image. The disparity correction portion 101 corrects a disparity of the input disparity image within a predetermined range and outputs a disparity image storing the corrected disparity to the disparity conversion portion 103. The disparity conversion portion 103 converts the disparity of the disparity image such that a disparity corresponding to the image of the main object determined by the main object determination portion 102 reaches a predetermined value, and outputs the disparity image obtained after the conversion to an image generation portion 104. The image generation portion 104 generates an image for the left eye and an image for the right eye based on the input disparity image and the input captured image, and outputs the images to a display apparatus. As a result, the disparity is converted such that the three-dimensional effect of the main object is enhanced.
Owner:SHARP KK

Ring-shaped retractable pet lead

InactiveCN101518211ANot easy to fatigueImproved Balance WeightTaming and training devicesWrist strainMechanical engineering
The present invention provides a comfortable and easy to use retractable pet leash. A retracting and locking leash assembly provides a hollow ring-shaped leash housing, a spool inside the hollow ring-shaped leash housing extending through out the circumference of the hollow ring-shaped leash housing, a retracting mechanism inside the interior of the hollow ring-shaped leash housing, and a brake trigger, the trigger constructed to adopt at least one braking position and one free position. The leash housing, the line opening and the brake trigger are arranged such that when the leash is in use, the user holds the leashing housing as a handle while being able to control the brake trigger with one finger without bearing extra wrist strain from the weight of the leash or the orientation leash.
Owner:HARTZ MOUNTAIN

Anti-myopia apparatus for reading and writing

This invention is about a read-write myopia prevention and cure instrument, which contains: support (1), once plane reflecting mirror (4), quadratic plane reflecting mirror (11) and eyesight (7). Its characteristic is: once plane reflecting mirror (4) directly reflect ray of eyeshot object, and its total length of optical path (Sú¢S1+S2+S3) is larger than 300mm, less than 5000mm; Lens or lenses group are installed at the eyeglass. This invention has broad eyeshot and strong suitability; using it, eyes will not fag easily, read-write is nature, work or study time can be prolong; it can prevent and cure myopia effectively, can enhance prevention and cure effect according to specific crowd or individual myopia degree and the viewing-object distance and angle of sight line can be melodied. It is convenient and flexible, it can correct sitting gesture and prevent cervical vertebra disease. It is especially suitable to long-term short-distance read-write people.
Owner:戴明华

Combined membrane, stethoscope head matched with same as well as matching component of both

The invention relates to a medical instrument accessory, in particular to a stethophone accessory. The invention discloses a combined membrane which comprises a round membrane and a fixer. The fixer comprises three parts including a big ring, a small ring and a connecting part, wherein the big ring is arranged below the connecting part, the small ring is arranged above the connecting part and radially provided with a ring slot, and the outer edge of the round membrane is positioned in the ring slot. The invention also provides a stethoscope head which comprises a stethoscope head body and a cylinder, wherein the cylinder and the stethoscope head body are integrated into a whole, the end surface of the cylinder is provided with an axial ring slot and a sound collecting surface; and a soundguide hole and a fixing hole are arranged on the sound collecting surface. The membrane has the advantages of good restoration and accurate positioning; the stethoscope head is easy to install and hasstrong tightness; and users can acutely acquire a matching structure of multitone only by changing force applied on the stethoscope head body.
Owner:单希杰

3D visual guidance based unstacking method and system

The invention provides a 3D visual guidance based unstacking method and system, and relates to the technical field of logistics and warehousing. The method comprises steps as follows: point cloud dataand image data of stacked materials are acquired on the basis of 3D vision; a target box body is recognized from the image data with an instance segmentation algorithm, and current position coordinates of the target box body are determined according to the point cloud data; information of a path from a manipulator to the target box body is planned according to the current position coordinates ofthe target box body and current position coordinates of the manipulator, the manipulator is enabled to grab the target box body from the stacked material according to the information of the path, andthe target box body is placed in the target position. Manual work is replaced to complete unstacking, working efficiency is high, the worker is tireless, working properties are relatively stable, andaccuracy rate of goods unstacking is high.
Owner:BLUESWORD INTELLIGENT TECH CO LTD

Cruising constant-speed control system and cruising constant-speed control method

The invention discloses a cruising constant-speed control system and a cruising constant-speed control method. A car comprises a car chassis, a steering pipe column, an integrated instrument platform, a speed sensor, a throttling valve and an electronic accelerator actuator; the cruising constant-speed control system is characterized by comprising an instruction switch, a gradient sensor and a controller; the instruction switch, the speed sensor and the gradient sensor are respectively connected with the controller, the controller is connected with the electronic accelerator actuator, and the electronic accelerator actuator is connected with the throttling valve of an engine. The cruising constant-speed control system has characteristics that the running speed of the car can be adjusted according to the road situation and the rotating angle of a steering wheel; the fuel can be economized; the engine is not easy to damage; drivers can easily concentrate and are not easy to fatigue; and reliable insurance can be provided for the safe driving.
Owner:ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1

Automobile automatic speed-limiting control system and control method

ActiveCN104709284ALow costSpeed limit controlControl systemControl cell
The invention discloses an automobile automatic speed-limiting control system and a control method. The automobile automatic speed-limiting control system comprises a control unit and a signal collecting unit. The control unit comprises a controller, an ABS braking device and a control valve arranged on an automobile oil supply pipeline for controlling the flow of gasoline. The signal collecting unit comprises a speed sensor used for collecting a driving speed of an automobile, a speed limit acquiring device used for collecting a speed limit value of a current driving road section and a satellite positioning device used for collecting a current driving direction of the automobile and a road condition where the automobile is located. The controller judges whether the current automobile is overspeeded or not based on signals received from the speed sensor and the speed limit acquiring device. Based on the judging signals and the information acquired from the satellite positioning device, the opening degree of the control valve and the condition of whether to activate the ABS braking device or not are confirmed. According to the automobile automatic speed-limiting control system, the effects of user-friendliness, high practicality and high safety coefficient are achieved. The invention further provides a control method which has the safe, care-free and intelligentized effect.
Owner:绵阳历泰机械制造有限公司

Du-moxibustion treatment couch

The invention relates to acupuncture machinery, in particular to a du-moxibustion treatment couch aiming to solve the problems of inconvenient operation, poor safety, and the like of du-moxibustion treatment. The du-moxibustion treatment couch mainly comprises a drug storage groove, an L-shaped lateral door, a square box and a moxa combustion pipe and is characterized in that the rectangular drug storage groove is arranged in the center at the front part of the treatment couch, the L-shaped lateral door is provided with a lateral door handle and the moxa combustion pipe which is arranged at the bottom of the L-shaped lateral door, the square box is provided with an air inlet and an air outlet pipe, and a rectangular cover plate is arranged above the drug storage groove. The invention has high moxa heat utilization and high safety, is convenient to use and is suitable for various spinal shape treatments, and a patient laying on the treatment couch for treatment is not easy to be weary in body.
Owner:NANTONG HONGCI PHARMA

Seat with headrest

InactiveCN103287297ARealize stepless lifting and positioningEasy to adjustVehicle seatsEngineeringMechanical engineering
The invention discloses a seat with a headset. The seat with the headset comprises a backrest and the headrest arranged above the backrest and is characterized in that the headrest is connected with a lifting positioning mechanism. The lifting positioning mechanism comprises a support column, a nut, a worm and a motor, wherein the support column is fixedly connected with the nut, the nut and the worm are assembled together, and the worm is connected with the motor; and the headrest is connected with the support column, and the support column penetrates a casing pipe arranged on the backrest and can vertically move inside the casing pipe. Another type of the lifting positioning mechanism comprises two support columns, a nut, a worm and a motor, wherein the two support columns are connected through a connection rod, the connection rod is fixedly connected with the nut, the nut and the worm are assembled together, and the worm is connected with the motor; and the headrest is connected with the two support columns, and the two support columns penetrate two casing pipes arranged on the backrest and can vertically move inside the casing pipes. The headrest is in a long strip shape, and a swing-type headholder is also arranged above the headrest. The seat with the headrest achieves the stepless headrest lifting positioning and is simple in height adjustment and convenient to use.
Owner:阮小晨

Environment-friendly latex paint and preparation method thereof

The invention discloses an environment-friendly latex paint and a preparation method thereof, and relates to the technical field of latex paint. The latex paint is prepared from the following raw materials in parts by weight: 85-105 parts of styrene-acrylic emulsion, 35-45 parts of nano-silica sol, 20-25 parts of diatom ooze, 10-15 parts of nano-TiO2, 10-15 parts of tourmaline anion powder, 10-15parts of glutinous rice glue, 7-8 parts of plant dehydrated filaments, 7-8 parts of antibacterial powder, 4-6 parts of active powder, 4-6 parts of essential oil components, 20-22 parts of an aid and 70-75 parts of deionized water. The latex paint has relatively powerful adhesive force, a paint film has light smell, low VOC and high adhesive force and is combined with the wall stably, peeling and bursting of the paint surface are not easily produced, and weather resistance of the latex paint is greatly improved.
Owner:HEFEI FANTENG ENVIRONMENTAL PROTECTION TECH CO LTD

Chaos multi-dimensional electrical stimulation system

The invention provides a chaos multi-dimensional electrical stimulation system in the technical field of medical appliances. The system provided by the invention comprises a multi-dimensional chaos signal generator, a multichannel power amplification controller, a control module and a plurality of multichannel stimulating electrodes, wherein the multi-dimensional chaos signal generator generates continuous three-dimensional adjustable chaos signals and outputs the continuous three-dimensional adjustable chaos signals to the multichannel power amplification controller; the multichannel power amplification controller performs electric energy amplification on the input three-dimensional chaos signals and outputs voltages and current to the multichannel stimulating electrodes; and the control module respectively outputs control instructions to the multi-dimensional chaos signal generator and the multichannel power amplification controller, so that the chaos signal generator enters different concussion states and independently regulates the intensity of each channel stimulation signal, and the multichannel stimulating electrodes are arranged on the human body surface. According to the invention, the multichannel stimulating electrodes are arranged at human body parts such as muscle, nerve and the like, so that the spatial control on electric fields and stimulating currents can be realized.
Owner:SHANGHAI JIAO TONG UNIV

Soft capsule helpful for relieving sports fatigue and delaying aging and preparation method thereof

InactiveCN103099833AEnhance diuretic functionStrengthen myocardial contractilityAntinoxious agentsUnknown materialsDiseaseFreeze-drying
The invention mainly relates to a soft capsule helpful for relieving sports fatigue and delaying aging. The soft capsule helpful for relieving the sports fatigue and delaying the aging is characterized by consisting of the following raw materials in parts by weight: 360-540 parts of linseed oil, 10-30 parts of wapiti velvet antler freeze-dried powder, 10-30 parts of a ginseng ground material, 10-30 parts of a dried rehmannia root extract, 10-30 parts of a rhizoma polygonati extract, 10-30 parts of a tuckahoe extract and 10-30 parts of a horny goat weed extract. The soft capsule is added with natural components capable of relieving the sports fatigue and delaying the aging, so that the component functions as invigorating kidney and strengthening Yang, strengthening tendons and bones, tonifying Qi and nourishing Yin, and integrally improving physical function, and circulations of Qi and blood are smooth, and nutrition is sufficient. Wapiti velvet antler and horny goat weed are capable of invigorating kidney and strengthening Yang, and strengthening tendons and bones; ginseng is capable of tonifying Qi and nourishing Yin, and clearing away heat and promoting secretion of saliva; rhizoma polygonati can moisten lung and nourish Yin, strengthen spleen and tonify Qi; tuckahoe is favorable for clearing damp and promoting diuresis, tonifying spleen and calming; dried rehmannia root functions as clearing away heat and cooling blood, nourishing Yin and promoting secretion of saliva; and linseed oil has functions of preventing and treating cancers, coronary heart disease, diabetes, prostatic cancer and other diseases. The composition integrally improves physical condition, relieves the sports fatigue and delays the aging.
Owner:甘肃创兴生物工程有限责任公司

Intelligent type writing teaching machine

InactiveCN1595472AQuickly master the essentials of standard writingSolve the problem of hands-on teachingTeaching apparatusLow voltageLoudspeaker
The invention relates to a teaching product used to help the schoolchildren or the preschoolers to write normally. The structure is that the writing board with the notches composed of the normal words or letters, the numbers, the strokes and the words is placed on the display backing block. The block is installed on the bottom bracket with a variable angle adjustable bracket installed on it. In addition, there is a control circuit, the switches and the loudspeakers installed on the bottom bracket. The power supply is provided by the input low-voltage constant voltage power supply or the battery. And there is a paper presser installed on the writing board. The teaching product directs the normalized writing exercises visibly, improves the writing speed, corrects the wrong sitting posture and protects the sight of the user.
Owner:张益全

Handle of telescopic tool

A telescopic handle of tool is composed of sleeved big and small tubes with a row of holes, screw bolt inserted in said hole for regulating the length of handle and nut for fixing said screw bolt.
Owner:刘官利

Vehicle-mounted computer adopting all-in-one computer

The invention discloses a vehicle-mounted computer adopting an all-in-one computer. The vehicle-mounted computer comprises the all-in-one computer and a keyboard. A sunken space matched with the all-in-one computer in size is arranged on a top plate in a vehicle body; one side of the all-in-one computer is connected to one inner side of the sunken space through a hinge; a fixing bolt is arranged at a position on the top plate, close to an edge of the sunken space; the sunken space matched with the keyboard in size is arranged on the rear side of a backrest of a seat; one side of the keyboard is connected to one inner side of the sunken space through a hinge; the position on the keyboard, close to the other side, is connected to the sunken space through a connecting rod; a sliding slot is formed on the connecting rod; one end of the connecting rod is hinged with the sunken space; a sliding block is arranged on the keyboard; the sliding block of the keyboard is buckled with the sliding slot of the connecting rod; and the keyboard is in wireless connection with the all-in-one computer. Compared with the prior art, the vehicle-mounted computer has the advantages that the keyboard and the all-in-one computer are in wireless connection and are respectively mounted in the reasonable positions in the vehicle, so that a user can more comfortably use the vehicle-mounted computer and the reliability of equipment is higher.
Owner:TPV ELECTRONICS (FUJIAN) CO LTD

Method for preparing electrically conductive reinforced finger glove

The invention relates to a method for preparing an electrically conductive reinforced finger glove. The method comprises the following steps: firstly, preparing a conductive carbon black dispersion liquid, carrying out one-pass latex dispersion composite liquid slurry, and then mixing the conductive carbon black dispersion liquid with a presulfurized latex to prepare a two-pass latex dispersion composite liquid slurry, after a glove base is soaked in a coagulator, soaking in the one-pass latex dispersion composite liquid slurry, and then, a finger part soaking in the two-pass latex dispersioncomposite liquid slurry, then, performing prevulcanization and high-temperature vulcanization to obtain the conductive reinforced finger glove. The gloves provided by the invention can effectively reduce the production cost. And the gloves are soft and comfortable in use and flexible in fingers. At that same time, the insulation at the palm of the hand is also achieved, such as nitrile rubber gloves. When the thickness of the palm of the hand is 0.2 mm, the instantaneous breakdown voltage is 1.5 KV.
Owner:SHANDONG XINGYU GLOVES

Ultrasonic scanning probe

The invention relates to a probe and in particular relates to an ultrasonic scanning probe, belonging to the technical field of ultrasonic image-forming equipment. According to the technical scheme provided by the invention, the ultrasonic scanning probe comprises a housing, wherein a probe main body is arranged in the housing; a transducer base which is rotatably connected is arranged in the probe main body; a transducer is arranged on the transducer base; a swinging drive mechanism for driving the transducer base and the transducer to swing in the probe main body is arranged on the probe main body; the swinging drive mechanism comprises a drive motor, wherein a drive bevel gear is arranged at the end part, getting out of the output shaft of the probe main body, of the drive motor; and the drive bevel gear is engaged with a driven bevel gear on the transducer base. The ultrasonic scanning probe has a simple structure and a small size, is light, and can guarantee that the transmitted motor output power is enough to enable the transducer to realize swing-scanning within a large-angle range.
Owner:WUXI CHUDIAN TECH

Drive device based on gas-liquid combination spring and valve actuator

The invention discloses a drive device based on a gas-liquid combination spring and a valve actuator. The drive device comprises the actuator and a power cylinder. The power cylinder is installed on the actuator and provided with the gas-liquid combination spring. The gas-liquid combination spring comprises a pressure container tank. A gas input opening is formed in the upper end of the pressure container tank. A compressed gas cavity is formed in the upper portion in the pressure container tank, and a hydraulic oil cavity is formed in the lower portion of the pressure container tank. The compressed gas cavity is filled with compressed gas. The hydraulic oil cavity is filled with hydraulic oil. A hydraulic oil outlet is formed in the lower end of the pressure container tank. The gas-liquid combination spring with the same function replaces a traditional metal spring or a metal spring cylinder only serving as a valve actuator. The structural design, the manufacturing technology, site replacement, breakdown maintenance, the actuator drive valve application efficiency and the work reliability of the gas-liquid combination spring are improved greatly, and the manufacturing cost and the installing work difficulty are reduced greatly.
Owner:CHENGDU MAIKESEN FLUID CONTROL EQUIP

Ultrasonic flaw detection auxiliary device and operating method thereof

The invention discloses an ultrasonic flaw detection auxiliary device and an operating method thereof. The device comprises a shell, a clamping cap and a spring, wherein the shell is cone-shaped, and the center of the shell is provided with a round hole provided with a probe; the spring is positioned on a platform at the bottom of the round hole; and the clamping cap is arranged at the upper part of the shell in a way of threaded connection. The operating method comprises the following steps: arranging the probe connected with a cable inside the round hole of the shell and pressing the probe on the spring; and then, screwing the clamping cap, and adjusting the contact gap between the probe and the surface of a steel plate by the pressure of the pressured spring and the adjusting action of the clamping cap, so that the best thickness of a coupling layer required by detection can be reached. As the contact gap between the probe and the surface of the steel plate can be adjusted by the pressure of the pressured spring and the adjusting action of the clamping cap, the invention can control the best thickness of the coupling layer required by detection. The shell has heavier weight and larger size, so that the stability of the flaw detection auxiliary device can be ensured in the process of flaw detection scanning of the steel plate.
Owner:CHINA FIRST HEAVY IND +1

Micro motor magnetic steel assembly device

The invention discloses a micro motor magnetic steel assembly device which comprises a working platform and two guide rails on the working platform. A movable supporting base is arranged on the two guide rails. A third air cylinder is arranged on the movable supporting base. An installation arm parallel to the two guide rails is fixed to a piston rod of the third air cylinder. The two ends of the installation arm are provided with a first air cylinder and a second air cylinder. A first magnetic steel attraction device is arranged on a piston rod of the first air cylinder. A second magnetic steel attraction device is arranged on a piston rod of the second air cylinder. A first magnetic steel positioning base, a second magnetic steel positioning base and a shell positioning base are sequentially arranged on the working platform along the straight line. The distance between every two adjacent positioning bases is equal to the distance between the first magnetic steel attraction device and the second magnetic steel attraction device. A fourth air cylinder is installed on the working platform through a support. A piston rod of the fourth air cylinder extends downwards. A magnetizing apparatus corresponding to the second magnetic steel positioning base is arranged on the piston rod of the fourth air cylinder. According to the micro motor magnetic steel assembly device, the labor intensity of workers is reduced, and production efficiency is improved.
Owner:广安市超颖电子科技有限公司

Printing prosthetic hand and manufacturing method thereof

The invention relates to a printing prosthetic hand and a manufacturing method thereof, and belongs to the technical field of prosthetic hand designing and making. According to the technical scheme, the printing prosthetic hand is formed by a big arm cylinder, an elbow joint, a small forearm cylinder, a wrist joint, a palm, a thumb, an index finger, a middle finger, a ring finger and a little finger which are connected in sequence through integral one-time 3D printing, and a grasping and stretching system composed of stretching main sheet metal, a palm built-in module, finger stretching piecesheet metal and a fingertip prefabricated module which are connected in sequence is embedded into the prosthetic hand. The elbow joint, the wrist joint and all metacarpal joints and interphalangeal joints of the thumb, the index finger, the middle finger, the ring finger and the little finger are each of a folding type straight and curved telescopic joint structure, wherein the elbow joint and thewrist joint are each of a high-strength structure. For prosthetic hand making, a left or right prosthetic hand three-dimensional digital model file is built at first, and layer-by-layer three-dimensional continuous printing is conducted. The prosthetic hand is high in connection precision, low in weight, small in bend resistance and not prone to fatigue, assembling is not needed, the weight of the whole prosthetic hand can be lowered, and the cost can be lowered.
Owner:长春市漫思教育科技有限公司

Manufacture method of drum paper of loudspeaker

The invention discloses a manufacture method of drum paper of a loudspeaker, pertaining to the technical field of electroacoustic products. The method comprises the following steps: 1) pulping; 2) batching; 3) papermaking; 4) neck strengthening; 5) spraying varnish; 6) spraying glue or throwing glue; 7) cutting material; 8) forming; 9) applying edge glue; 10) attaching and reinforcing. The manufacture method of drum paper of the loudspeaker has the following beneficial effects: physical performance such as filling power, damping performance, light weightness and hardness and softness of the drum paper can be elevated so that the loudspeaker utilizing the drum paper can obtain good sound effect; sounds become softer and gentle so that comfortable and natural sounds that do not arouse fatigue can be obtained; meanwhile, pulp used by the drum paper has better clarity of the low-frequency and middle-frequency sound quality; toughness is improved; and the distortion rate is lower.
Owner:广西玉林市禹力音响配件有限公司
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