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217 results about "Swelling capacity" patented technology
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The swelling capacity of a polymer is determined by the amount of liquid material that can be absorbed by it. This test can done by two methods...
Water-absorbing agent and production process therefor, and water-absorbent structure
InactiveUS7098284B2Promote absorptionMaintain good propertiesOther chemical processesAbsorbent padsBursting strengthAbsorption capacity
The present invention provides: a novel water-absorbing agent, which exhibits an excellent absorption capacity under a load (AAP), gel layer liquid permeation rate under a load (FRUP), saline flow conductivity (SFC), and shape-maintaining property and ball burst strength (BBS) of a swollen water-absorbing agent aggregate, and excellent persistency of these effects for a long time. The water-absorbing agent, which comprises a polymer obtained by a process including the steps of polymerizing and then crosslinking a monomer including acrylic acid and / or a salt thereof, with the water-absorbing agent being characterized by: (1) exhibiting a free swelling capacity of not less than 23 g / g (GV), a gel deformation of not more than 12.5 cm under a short-time load (0.5 hrPT), and a gel deformation deterioration of not more than 3.5 cm under a load with the passage of time (ΔPT); (2) exhibiting a free swelling capacity of not less than 23 g / g (GV), a ball burst strength of not less than 80 gf (BBS), and a deterioration of ball burst strength of not more than 40% (DBBS); or (3) exhibiting a free swelling capacity of not less than 23 g / g (GV), an absorption capacity of not less than 20 g / g under a load of 4.9 kPa (AAP), and a gel deformation of not more than 12.5 cm under a load (16 hrPT).
Owner:NIPPON SHOKUBAI CO LTD
Water Swelling Rubber Compound for Use In Reactive Packers and Other Downhole Tools
Through the combination of at least two polymer families, and the optimization of other components, a rubber compound has been developed for use in downhole applications that will swell in water-based fluids. A cellulose component, such as carboxy methyl cellulose (CMC), is used together with an acrylate copolymer (AC) that can increase the swelling capacity of an acrylonitrile butadiene rubber (NBR) in water to over 1000%. The amount of swelling achieved depends on physical boundaries and limitations, the salinity of the water, and the temperature.
Owner:BAKER HUGHES INC
Biocorrodible implant with a coating comprising a hydrogel
The invention relates to an implant having a base body consisting completely or partially of a biocorrodible metallic material, the material being such that it decomposes in an aqueous environment to yield an alkaline product and the base body has a coating comprising or containing a hydrogel, characterized in that the hydrogel has a reduced swelling capacity at an elevated pH.
Owner:BIOTRONIK VI PATENT
Polymer lithium ion battery and diaphragm thereof
ActiveCN102610773AImprove thermal stabilityImprove mechanical propertiesSecondary cellsCell component detailsCyclic processSwelling capacity
Owner:NINGDE AMPEREX TECH +1
Catheter tubing, catheter, and catheter assembly
A catheter tubing (2) consists of a composite comprising a first material (54) which mainly consists of a hydrophilic plastic material which absorbs moisture and which therefore swells in contact with e.g. blood, and a second material which essentially does not absorb moist but which forms reinforcing longitudinal strands (55) in the catheter tubing, which counteract that the catheter tubing is extended or becomes thicker because of the swelling capacity of the first polymeric material, such that the volume increase of the hydrophilic, first plastic material substantially results in an increase of the circumference of the tubing and hence of its diameter and flow area. A catheter is made of a catheter tubing of that type and can be included in an assembly (1) comprising a hub (4) having a front portion (11) provided with a pair of wings (29) extending outwards from the hub. The wings can be folded against one another in order to serve as a gripping member (7) provided adjacent to the catheter when the catheter is being inserted into a fistula (40), whereupon they can be brought to contact and be releasably adhered to the skin of a patient.
Owner:PUHASMAGI ARNE +2
Method for simultaneously measuring high-pressure gas adsorption capacity and adsorption swell capacity of coal petrography and measuring equipment
InactiveCN101975718AEasy to measureQuick measurementMaterial analysisHigh resistanceSwelling capacity
The invention provides a method for simultaneously measuring high-pressure gas absorption capacity and adsorption sell capacity of coal petrography and measuring equipment, which can simultaneously measure the adsorption capacity and adsorption swell capacity of the coal petrography in high-pressure gas at a pressure of 0-20MPa and a temperature of 0-80 DEG C. In the process of measurement, a measurement and control device is used for performing signal transformation and analog-to-digital conversion on electrical signals of a displacement sensor, a temperature-measuring hot resistor and a pressure transmitter; a computer is used for automatically receiving pressure, temperature and displacement signal data from the measurement and control device and recording and saving the received data; and a computer screen is used for displaying the pressure, temperature, adsorption capacity and swell capacity data timely in the process of measurement and the change law curves of the pressure, the temperature and the swell capacity with the change of time in real time. In the method of the invention, the measurement on the adsorption capacity and the adsorption swell capacity can be finished simultaneously, so that the method is simple and convenient and fast, and has the advantages of simple structure, reliable and safe high-pressure seal, easy operation, high measurement accuracy, high resistance to pressure and automatic measurement.
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Absorbent composition containing transitional crosslinking points
InactiveUS6998367B2Controlled fluid absorption rateImproved fluid distributionOther chemical processesBaby linensSwelling capacityWater insoluble
A water insoluble, water swellable absorbent composition exhibiting a free swell absorbency of at least 15 g / g and an Absorbency Change of greater than or equal to 15% upon saturation. The absorbent composition includes both permanent crosslinking points and transitional crosslinking points. The absorbent composition has a high free swell capacity as well as a high absorbency under load.
Owner:KIMBERLY-CLARK WORLDWIDE INC
Lithium ion battery and membrane thereof
InactiveCN107039624AAvoid deformationPerformance impactCell component detailsSecondary cells servicing/maintenanceSwelling capacityPole piece
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery and a membrane thereof. The membrane comprises a base membrane, wherein at least one surface of the base membrane is coated with a polymer coating; and the polymer coating is prepared into slurry by mixing and stirring a polymer, an adhesive agent and a pore forming agent in a solvent, coated on the surface of the base membrane, and uniformly distributed in an island shape. Compared with the prior art, the polymer coating in the membrane has good liquid absorption swelling capacity; an interface has good stability; the prepared lithium ion battery has an excellent mechanical property; an island-shaped distribution characteristic of the polymer coating provides a space for charging and discharging of a pole piece as well as swelling in a cycle process; and the problem of deformation of the lithium ion battery is well solved. In addition, the island-shaped polymer coating formed by the pore forming agent can be uniformly distributed on the base membrane, so that nonuniform current density distribution can be effectively avoided, and an influence on a property of the battery can be prevented.
Owner:东莞市魔方新能源科技有限公司
Method for preparing nano-composite hydrogel with excellent mechanical performances
The invention relates to a method for preparing nano composite hydrogel with good mechanical property, which is characterized by comprising the following steps: firstly, an anhydrous monomer and physical crosslinking agent inorganic clay are dispersed in deionized water, nitrogen enters into a closed container under the condition of normal temperature and normal pressure, and then the mixture is stirred; secondly, an initiator is added, stirring is continued under the condition of normal temperature and normal pressure, and a hydrogel solution is prepared; and thirdly, the solution undergoes free radical polymerization reaction at a certain temperature, and then a reactant is immersed in the deionized water so as to prepare the nano composite hydrogel with good mechanical property. The method has the advantages that: not only the preparation technique is simple but also the gel prepared simultaneously has good transparency, hydroscopic and swelling capacity, and mechanical property.
Owner:DONGHUA UNIV
Ethanol gasoline and preparation method thereof
ActiveCN101812332ALong stable periodSolve corrosiveLiquid carbonaceous fuelsFuel additivesSwelling capacityAlcohol
The invention discloses ethanol gasoline, which is characterized by consisting of the following raw materials in part by volume: 60 to 70 parts of regular gasoline, 2 to 10 parts of absolute ethanol, 10 to 20 parts of latent solvent, 13 to 23 parts of surfactant, 10 to 15 parts of combustion improver, 3 to 10 parts of corrosion inhibitor and 7 to 15 parts of detergent dispersant. The invention also discloses a preparation method of the ethanol gasoline. The ethanol gasoline has the advantages of high storage stability, high intersolubility, no corrosion, no swelling capacity and readily available raw materials, can be used together with other alcohol automobile gasoline such as methanol gasoline and the like in any ratio, and also can be directly used with common gasoline of the same standard in any proportion; the octane level reaches or exceeds the standards of No. 93 and No.95 clear gasoline; and the overall performance of the ethanol gasoline can meet standard requirements of the No.93 clear gasoline.
Owner:SHANDONG TAIDE NEW ENERGY
Stimuli-responsive composite material made from bacterial nano cellulose as well as preparation method and application of stimuli-responsive composite material
ActiveCN103665439AHigh strengthGood biocompatibilityPharmaceutical non-active ingredientsAbsorbent padsTemperature responseSwelling capacity
The invention relates to a stimuli-responsive composite material made from bacterial nano cellulose as well as a preparation method and application of the stimuli-responsive composite material. A bacterial nano cellulose base material in a hydrogel state is combined with polyelectrolyte macromolecules in an interpenetrating or semi-interpenetrating manner, and then is wholly or partially dehydrated to obtain the composite material. The composite material is high in rehydration and swelling capacities under the condition of a particular Ph, and keeps the characteristics of low swelling capacity and difficulty in rehydration under the condition of an off-design Ph value. The composite material has the characteristics of temperature response; the pore size of network of the composite material can be controlled, and the penetration rate of solute molecules can be controlled to release a drug in a control manner. Meanwhile, the composite material has the characteristics of high strength, high biocompatibility and the like of the bacterial nano cellulose, and can be applied to smart wound dressings, smart drug carriers, sensors, chemical valves and the like. The composite material has the advantages that the preparation process is simple, the cost is low, and a good application prospect is achieved.
Owner:DONGHUA UNIV
Release layer
An apparatus and method transfer imaging material using a release layer having a bulk swelling capacity between 120% and 145% in Isopar L.
Owner:HEWLETT PACKARD DEV CO LP
Gas turbine support system
InactiveCN102926873AAvoid crackingExtended service lifeGas turbine plantsEngine componentsSupporting systemSwelling capacity
The invention relates to a gas turbine support system, and belongs to structural design of a gas turbine. The support system comprises a compressor cylinder supporting mechanism, a turbine cylinder supporting mechanism, an exhaust cylinder guide rail mechanism and a base, wherein the turbine cylinder supporting mechanism is composed of a supporting arm, a supporting arm rotating shaft, a supporting lower arm, a lower arm rotating shaft and a shaft base; and the supporting arm and the supporting lower arm rotate around the supporting arm rotating shaft, and the supporting lower arm rotates around the lower arm rotating shaft. According to the invention, the turbine cylinder supporting mechanism adopts a structure that the supporting lower arm rotates around the lower arm rotating shaft, the structure can compensate radial direction swelling capacity generated by heating of a turbine, and cracking of the supporting arm caused when the turbine cylinder is heated to expand is avoided; therefore, the service life of the support system is prolonged, the reliability of the support system is improved, and the gas turbine is guaranteed to work stably and reliably.
Owner:BEIJING HUAQING GAS TURBINE & INTEGRATED GASIFICATION COMBINED CYCLE ENG TECH
Super guar gum foamed fracturing fluid injected with liquid nitrogen for low-permeability gas reservoir and preparation method thereof
ActiveCN102093875AImprove performanceLow residue contentDrilling compositionSwelling capacityFracturing fluid
The invention relates to the technical field of fracturing fluid used in a compression fracture yield increasing process of an oil well or a natural gas well, in particular relating to super guar gum foamed fracturing fluid injected with liquid nitrogen for a low-permeability gas reservoir. The preparation method of the super guar gum foamed fracturing fluid comprises the following steps: homogeneously mixing a base solution with a crosslinking solution to obtain a semi-finished product of the super guar gum foamed fracturing fluid; and adding a viscosity breaking agent and injecting liquid nitrogen into the semi-finished product to obtain the super guar gum foamed fracturing fluid injected with liquid nitrogen for on-site construction. The super guar gum foamed fracturing fluid provided by the invention has the advantages of good swelling capacity, stable nature of foam, low content of fracturing fluid residue and good viscosity breaking performance, and can be used for reducing the damage to reservoir bed, increasing the strata energy after fracturing, and improving the flowback efficiency.
Owner:CNPC XIBU DRILLING ENG
Method for preparing through-hole polymer porous aquagel by using graphene oxide (GO)
The invention belongs to the technical field of materials, and particularly relates to a method for preparing a through-hole polymer porous aquagel by using graphene oxide (GO). The method mainly comprises the following steps: carrying out surface modification on hydrophilic GO by using an oleophylic modifier, wherein the modified GO is used as a stabilizer of a Pickering emulsion; and adding a monomer, a crosslinking agent, an initiator and a pore-forming agent, emulsifying to obtain an oil-in-water high-inner-phase emulsion, and carrying out continuous phase polymerization on the high-inner-phase emulsion to obtain the through-hole-structure polymer porous aquagel. The method has the advantages of simple preparation process and lower cost. The prepared through-hole polymer porous aquagel has the advantages of controllable pore structure, large pore size (5-200 mu m), large interconnection size (2-70 mu m), favorable permeability, favorable swelling capacity and favorable adsorbability.
Owner:FUDAN UNIV
Method for lowering ash content of polyacrylonitrile-based carbon fiber
InactiveCN103290527AImprove hydrophilicityHigh degree of structural densificationTextile/flexible product manufactureSynthetic polymer filament chemical after-treatmentCarbon fibersSwelling capacity
The invention discloses a method for lowering ash content of polyacrylonitrile-based carbon fiber. A PAN (Polyacrylonitrile) spinning solution with higher hydrophilism is prepared on the basis of a quaternary ammoniated modification copolymerization system. A PAN-based raw silk with high structural compaction degree, good mechanical performance and low ash content is prepared by virtue of key control of swelling capacity before applying oil agent on the raw silk, introducing a low-silicon oil agent and controlling the oil content of the silk flock. The carbon fiber ash content and the raw silk ash content have linear relation, and are matched with a certain charring process for charring the raw silk to obtain the carbon fiber with low ash content.
Owner:XIAN KANGBEN MATERIAL
Method for conducting wool fabric anti-felting treatment through two-bath process by using imidazolium chloride ionic liquid/protease
InactiveCN101781852AReduced felt shrinkageSolve pollutionBiochemical fibre treatmentAnimal fibresYarnSwelling capacity
The invention relates to a method for conducting wool textile anti-felting treatment through a two-bath process by using imidazolium chloride ionic liquid / protease, belonging to the application field of wool fabric dyeing and finishing in the wool textile industry. The method is characterized in that chloroform / methanol is used to extract impurities on the surface of the fabric first, then the strong dissolving / swelling capacity of the imidazolium chloride ionic liquid is used to modify the surface layer of wool yarn scales and finally protease is used to trim the fabric to obtain the goal of improving the anti-felting effect of the wool fabric treated by using protease. Moreover, the ionic liquid used for pretreatment can be repetitively utilized after the ionic liquid is distilled under reduced pressure, so the environmental pollution is reduced. The invention solves the problems that the anti-felting effect of the wool fabric treated by using the existing single protease is bad and serious pollution is caused by the DCCA / protease anti-felting technology.
Owner:JIANGNAN UNIV
Methanol gasoline-resistant rubber material
The invention provides a methanol gasoline-resistant rubber material. The methanol gasoline resistant swelling capacity of the rubber material is further enhanced on the premise of satisfying the comprehensive performance of rubber. The rubber material is prepared from various materials such as novel fluorine rubber, an acid absorbing agent, a reinforcing filler, a vulcanizing agent, an accelerant, a plasticizing agent and the like. The rubber material specifically comprises the following components in parts by weight: 100 parts of ternary polymerized fluorine rubber (FKM), 5-20 parts of acid absorbing agent, 0.5-5 parts of vulcanizing agent accelerant, 5-80 parts of reinforcing filler, 0-10 parts of plasticizing agent and 1-5 parts of vulcanizing agent. The rubber material has excellent methanol gasoline resistance. An O-shaped sealing ring and a rubber pipe for a fuel system of a vehicle made of the rubber material have high methanol gasoline resistant swelling capacity.
Owner:中国化工集团曙光橡胶工业研究设计院有限公司
Water-absorbing agent and production process therfor, and water-absorbent structure
InactiveUS20060229413A1Maintain good propertiesGood effectLiquid surface applicatorsOther chemical processesBursting strengthSwelling capacity
Owner:NIPPON SHOKUBAI CO LTD
Application of hyaluronic acid and its salt, crosslinked hyaluronic acid and its salt in preparing medicament for treating or preventing sea-soaking injury
ActiveCN101313915AAvoid injuryModerate swellingOrganic active ingredientsDermatological disorderWound healingCross-link
Owner:北京泰克美高新技术有限公司
Water swelling rubber compound for use in reactive packers and other downhole tools
Owner:BAKER HUGHES INC
Collagen - Na-MMT complex fiber, and spinning technological process thereof
InactiveCN101503834AStrong interactionImprove mechanical propertiesMonocomponent protein artificial filamentArtificial filament washing/dryingInorganic saltsFiber
The invention discloses novel collagen composite fiber mainly comprising collagen and a small amount of Na-MMT, and a spinning technical method thereof. The proportion of collagen and Na-MMT in the composite fiber counted in portion by dry weight is 10,000:1-100. The main preparation method of the composite fiber comprises: stirring and mixing 15 to 50 weight percent collagen solution and 0.1 to 2 weight percent Na-MMT solution according to a set proportion under a water bath condition between 50 and 80 DEG C; carrying out hot filtration at a temperature between 50 and 80 DEG C after the solutions are evenly mixed; obtaining spinning solution used to imitate collagen-Na-MMT composite fiber after defoaming; extruding the spinning solution through a spinneret under the action of gas pressure at a temperature between 50 and 80 DEG C; and entering inorganic salt coagulation bath to prepare the collagen-Na-MMT composite fiber through solidification. In addition, the intensity, swelling capacity, water absorption, and the like of textile composite fiber can be improved through post treatments such as acetalation and oiling. The collagen-Na-MMT composite fiber can be used for textile materials and biomedical materials.
Owner:SICHUAN UNIV
Hydrogel dressings and preparation thereof
InactiveCN101244286AEasy to manufacturePromote regenerationAbsorbent padsBandagesWound healingSwelling capacity
The invention discloses a hydrogel dressing, comprising water-soluble polymer, water-soluble chitin derivatives and solvent. The invention also discloses the method for preparing the hydrogel dressing, which is as follow: firstly, irradiation, secondly, circulation of freezing and unfreezing. The hydrogel dressing has the advantages of high transparency, large swelling capacity, high strength, low water evaporation rate, functions of antibacterial, anti-inflaminatory, hemostasis and promoting wound healing, no additive, and ability of providing a good healing environment for wound. The preparation method has the advantages of simple method, less time consumption, high efficiency, and ability of preparing the hydrogel dressing with high transparency, large swelling capacity and high strength.
Owner:SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
Particulate water-absorbing agent and production method for the same
ActiveUS20130175473A1Low costGreat extentAbsorbent padsAlkali metal oxides/hydroxidesParticulatesSwelling capacity
Provided is a water-absorbing agent having enhanced performance in both the centrifuge retention capacity and the absorption against pressure (particularly, the vertical diffusion absorption amount) of a water-absorbing resin, and also, a water-absorbing agent which can provide an absorbent core having a large absorption amount in a diaper, having improved diffusibility and liquid permeability, and having a smaller re-wet amount, is provided at low cost.Disclosed is a particulate water-absorbing agent containing a surface-crosslinked polyacrylic acid (salt)-type water-absorbing resin as a main component, and containing at least one spacer selected from a polycation and water-insoluble fine particles, the particulate water-absorbing agent satisfying an free swell capacity (FSC) of 55 to 65 [g / g], an absorption against pressure (AAP—4.83 kPa) of 20 to 30 [g / g], and a vertical diffusion absorption amount under pressure (VDAUP—4.83 kPa) of 30 to 80 g.
Owner:NIPPON SHOKUBAI CO LTD
Sea-tangle edible fiber and its making method
InactiveCN1557211ALow costTake advantage ofClimate change adaptationFood preservationFiberSwelling capacity
The kelp diet fiber product is white powder extracted from kelp dreg and has fiber content of 50-94 %, water maintaining capacity of 700-2100 %, swelling capacity of 10-30 ml / g, high purity and activity. The production process includes collecting flocculate, adding acid to eliminate calcium, alkali treatment, bleaching, washing, and drying and crushing into 160-200 mesh. The production process is simple, full in utilizing kelp and low in cost, and has less waste water drainage, non-toxic bleaching agent with sterilizing function used. The product is good for health.
Owner:THE FIRST INST OF OCEANOGRAPHY SOA
Method for continuously producing jelly of ultra-high molecular weight polyethylene porous membrane
ActiveCN101618295AEasy to useHigh strengthSemi-permeable membranesSwelling capacityVolumetric Mass Density
Owner:SHANDONG ICD HIGH PERFORMANCE FIBRES CO LTD
Insoluble dietary fiber of raisin tree and preparing method thereof
InactiveCN101548757ASmall particle sizeIncrease surface areaMetabolism disorderDigestive systemSwelling capacityAdditive ingredient
The invention discloses insoluble dietary fiber of raisin tree and a preparing method thereof. The raw material is raisin tree fruit or fruit residue thereof after brewing, vinegar production, sugar production, beverage production or active pharmaceutical ingredient extraction. According to the impurity in the raw material and the content, one or a plurality of methods of washing, acid treatment, alkali treatment and decoloring and the like are adopted to remove the impurity, and then dehydrating, drying and superfine grinding are executed. The prepared insoluble dietary fiber of raisin tree is light yellow or ivory powder with the average grain size of 10 to 90 Mum, the content of the insoluble dietary fiber is 50 percent to 100 percent, the retention ability is 1 to 10g / g, the liposuction ability is 1 to 10g / g, the swelling capacity is 1 to 10 mL / g, and the cation exchange resin capacity is 1 to 7 mmoI / g. The insoluble dietary fiber of raisin tree can be used for preparing food, functional food or medicines, or be taken as raw material or auxiliary material of food, functional food or medicines. The method for preparing the insoluble dietary fiber of raisin tree is simple, the production equipment is easily-obtained and has low cost, and the method is suitable for industrialized production.
Owner:NORTHWEST A & F UNIV
Multicomponent composition for filling and/or injecting cracks, flaws and cavities in structures or earth and rock formations
InactiveUS20100266348A1Improve adjustabilityEasy to controlSolid waste managementDrilling compositionSwelling capacityCost effectiveness
A multicomponent composition for filling and / or grouting cracks, flaws, and cavities in structures or earth and stone formations, including: i) water; ii) cement; iii) an aqueous plastic dispersion; and iv) at least one monomer, which can be radically polymerized, or a polyisocyanate. A material is thus obtained as a sealant, which displays great adjustment capabilities of hardness and reaction time, in addition to its cost-effectiveness. Such a composition unifies positive properties of various materials as a sealant, such as expansion capacity and swelling capacity.
Owner:SIKA TECH AG
Ionic superabsorbent polymers with enhanced swelling characteristics
InactiveUS6855434B2Improve absorption propertiesIncrease capacityCosmetic preparationsImpression capsSwelling capacityGram
Ionic superabsorbent polymers having increased swelling capacity of salt-containing solutions are disclosed. The ionic superabsorbent polymers of the present invention contain an additive to increase the osmotic activity of the polymer in the presence of a salt-containing solution. The additive used in combination with the ionic superabsorbent polymer is capable of forming a zwitterion at a pH of from about 1 to about 9, has a dipole moment greater than that of water, and has a molecular weight less than about 10,000 grams / mole.
Owner:KIMBERLY-CLARK WORLDWIDE INC
Environment-friendly cable filler and its preparation method
InactiveCN102399401AStable chemical structureGood gelInsulated cablesInsulated conductorsChemical structureSwelling capacity
The invention discloses environment-friendly cable filler and its preparation method. The filler is mainly prepared by mixing the following raw materials in proportion: polyvinyl chloride resin, phenolic resin, polypropylene, triallyl cyanurate, a silane coupling agent, titanate, zinc oxide, straw ash, graphite, calcium carbonate, an antiager, a fire retardant and lead silicate. The environment-friendly cable filler provided in the invention has the advantages of stable chemical structure, indecomposability by microorganism, good gelling performance, high swelling capacity, and can improve electric properties of cables, extend cable service life, and save resources.
Owner:徐州东兴能源有限公司
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