CN103065710B - Fire resistant antiflaming wire - Google Patents
Fire resistant antiflaming wire Download PDFInfo
- Publication number
- CN103065710B CN103065710B CN201310008952.3A CN201310008952A CN103065710B CN 103065710 B CN103065710 B CN 103065710B CN 201310008952 A CN201310008952 A CN 201310008952A CN 103065710 B CN103065710 B CN 103065710B
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- CN
- China
- Prior art keywords
- flame retardant
- fire resistant
- silicon rubber
- ceramic
- conductor
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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 38
- 239000000919 ceramic Substances 0.000 claims abstract description 52
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 45
- 239000004020 conductor Substances 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 239000003063 flame retardant Substances 0.000 claims description 101
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 88
- 239000011248 coating agent Substances 0.000 claims description 47
- 238000000576 coating method Methods 0.000 claims description 47
- 238000009413 insulation Methods 0.000 claims description 31
- 230000004888 barrier function Effects 0.000 claims description 21
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000007822 coupling agent Substances 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 8
- 229920001038 ethylene copolymer Polymers 0.000 claims description 7
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- QYMGIIIPAFAFRX-UHFFFAOYSA-N butyl prop-2-enoate;ethene Chemical compound C=C.CCCCOC(=O)C=C QYMGIIIPAFAFRX-UHFFFAOYSA-N 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 229920006245 ethylene-butyl acrylate Polymers 0.000 claims description 3
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 claims description 3
- 229920006225 ethylene-methyl acrylate Polymers 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract 1
- 238000002679 ablation Methods 0.000 description 8
- 229910003978 SiClx Inorganic materials 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- -1 phosphate ester Chemical class 0.000 description 1
- XZTOTRSSGPPNTB-UHFFFAOYSA-N phosphono dihydrogen phosphate;1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(N)=N1.OP(O)(=O)OP(O)(O)=O XZTOTRSSGPPNTB-UHFFFAOYSA-N 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
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- Insulated Conductors (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a fire resistant aitiflaming wire. The fire resistant antifloaming wire comprises a conductor and an insulating layer covered on the conductor, wherein the insulating layer comprises a ceramic changing silicon rubber fire resistant layer and an antiflaming insulating layer. Structure of the insulating layer has two forms, one form is that the conductor is covered by the ceramic changing silicon rubber fire resistant layer and the ceramic changing silicon rubber fire resistant layer is covered by the antifloming insulating layer; and the other form is that the conductor is covered by the antifloming insulating layer and the antifloming insulating layer is covered by the ceramic changing silicon rubber fire resistant layer. The ceramic changing silicon rubber fire resistant layer can further be intertwined by a ceramic changing fire resistant composite belt. The ceramic changing silicon rubber fire resistant layer can play a role in fire resistance, and still form a solid protection shell even if the fire endurance of the ceramic changing silicon rubber fire resistant layer is surpassed, thereby preventing flame from stretching to the inner portion of the wire, protecting the conductor from being damaged, and guaranteeing a normal usage function. The fire resistant performance of the fire resistant insulating layer can reach a VW-1 standard of American UL1581. The fire resistant aitiflaming wire is provided with both the fire resistant function and the antiflaming function, thereby guaranteeing normal usage of the wire under a fire disaster circumstance to a maximum degree.
Description
Technical field
The present invention relates to a kind of electric wire, particularly relate to a kind of fire resistant flame retardant electric wire.
Background technology
Along with the continuous progress of social development, the requirement of people to security protection improves constantly, in power cable field, people to fire resistant flame retardant electric wire in a fire continued power ability also have more and more higher requirement, the insulation property of fire resistant flame retardant electric wire are to continued power ability important in its fire.
Summary of the invention
The object of the present invention is to provide and a kind ofly can improve fire resistant flame retardant electric wire that is fire-resistant and fire resistance.
For achieving the above object, fire resistant flame retardant electric wire provided by the present invention, comprises the insulating barrier of conductor and this conductor coated, and described insulating barrier comprises Ceramic silicon rubber flame retardant coating and flame retardant insulation.
The Ceramic silicon rubber flame retardant coating of insulating barrier and the structure of flame retardant insulation have two kinds of forms.
The first is the Ceramic silicon rubber flame retardant coating coating conductor of insulating barrier, flame retardant insulation coating ceramic SiClx rubber flame retardant coating.
The second is the flame retardant insulation coating conductor of insulating barrier, the coated flame retardant insulation of Ceramic silicon rubber flame retardant coating.
Wherein, the component of ceramic flame-retardant layer comprises by mass: 100 parts, silicon rubber, silicon dioxide 20 ~ 100 parts, silicone oil 1 ~ 20 part, halogen-free flame retardants 5 ~ 30 parts, coupling agent 0.1 ~ 10 part, Vitrified powder 20 ~ 120 parts.
Wherein, the component of flame retardant insulation comprises by mass: ethylene copolymer and/or ethylene propylene diene rubber totally 100 parts, compatilizer 1 ~ 10 part, halogen-free flame retardants 80 ~ 250 parts, 0.1 ~ 5 part, antioxidant, lubricant 0.1 ~ 5 part, polymer elastomer 0 ~ 20 part, coupling agent 0 ~ 3 part, look mother 0 ~ 10 part.
Preferably, ethylene copolymer is selected from one or more in ethylene-vinyl acetate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer.
Wherein, described Ceramic silicon rubber flame retardant coating can also be entwined for the fire-resistant composite band of ceramic.
The Ceramic silicon rubber flame retardant coating of fire resistant flame retardant electric wire of the present invention can play resistance to fire action; even if surmount fire endurance burning still ablation can form hard containment vessel; containment vessel can prevent flame from extending to electric wire inside further; thus the conductor that protection is positioned at Ceramic silicon rubber flame retardant coating is not damaged, and guarantees the normal usage function of electric wire.The flame retardant insulation of fire resistant flame retardant electric wire of the present invention can play flame retardant effect, and fire resistance can reach the standard of VW-1 in U.S. UL1581.Fire resistant flame retardant electric wire of the present invention with fire-retardant and fire-resistant dual-use function, thus can guarantee the normal use under electric wire fire condition to greatest extent.
Embodiment
By describing technology contents of the present invention in detail, being realized object and effect, be explained in detail below in conjunction with execution mode.
Embodiment 1
A kind of fire resistant flame retardant electric wire, comprise the insulating barrier of conductor and this conductor coated, insulating barrier comprises Ceramic silicon rubber flame retardant coating and flame retardant insulation, the Ceramic silicon rubber flame retardant coating coating conductor of insulating barrier, flame retardant insulation coating ceramic SiClx rubber flame retardant coating.
Wherein, the component of Ceramic silicon rubber flame retardant coating formula comprises by mass: 100 parts, silicon rubber, silicon dioxide 20 parts, silicone oil 1 part, halogen-free flame retardants 5 parts, coupling agent 0.1 part, Vitrified powder 20 parts.
Wherein, the component of flame retardant insulation comprises by mass: ethylene copolymer 100 parts, compatilizer 1 part, halogen-free flame retardants 80 parts, 0.1 part, antioxidant, lubricant 0.1 part.
Preparation method is as follows: after each component of Ceramic silicon rubber flame retardant coating and flame retardant insulation being mixed respectively, formed the structure of double-layer integrally by co-extrusion.The electric wire of the present embodiment can play resistance to fire action; even if surmount fire endurance burning still ablation can form hard containment vessel; containment vessel can prevent flame from extending to electric wire inside further; thus the conductor that protection is positioned at Ceramic silicon rubber flame retardant coating is not damaged, and guarantees the normal usage function of electric wire.The fire resistance of the electric wire of the present embodiment can reach the standard of VW-1 in U.S. UL1581.
In the present embodiment, ethylene copolymer also can adopt following polymer to substitute: one or more in ethylene-vinyl acetate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer; One or more that also can be selected from magnesium hydroxide, aluminium hydroxide, calcium carbonate, Firebrake ZB, MCA or melamine pyrophosphate, phosphate ester flame retardants, HMW APP of halogen-free flame retardants substitute.
Embodiment 2
A kind of fire resistant flame retardant electric wire, comprise the insulating barrier of conductor and this conductor coated, insulating barrier comprises Ceramic silicon rubber flame retardant coating and flame retardant insulation, the Ceramic silicon rubber flame retardant coating coating conductor of insulating barrier, flame retardant insulation coating ceramic SiClx rubber flame retardant coating.
Wherein, the component of Ceramic silicon rubber flame retardant coating formula comprises by mass: 100 parts, silicon rubber, silicon dioxide 60 parts, silicone oil 10 parts, halogen-free flame retardants 18 parts, coupling agent 5 parts, Vitrified powder 70 parts.
Wherein, the component of flame retardant insulation comprises by mass: ethylene propylene diene rubber 100 parts, compatilizer 5 parts, halogen-free flame retardants 160 parts, 2 parts, antioxidant, lubricant 3 parts, polymer elastomer 10 parts, coupling agent 1 part, look female 1 part.
Preparation method is as follows: after each component of Ceramic silicon rubber flame retardant coating and flame retardant insulation being mixed respectively, formed the structure of double-layer integrally by co-extrusion.The electric wire of the present embodiment can play resistance to fire action; even if surmount fire endurance burning still ablation can form hard containment vessel; containment vessel can prevent flame from extending to electric wire inside further; thus the conductor that protection is positioned at Ceramic silicon rubber flame retardant coating is not damaged, and guarantees the normal usage function of electric wire.The fire resistance of the electric wire of the present embodiment can reach the standard of VW-1 in U.S. UL1581.
Embodiment 3
A kind of fire resistant flame retardant electric wire, comprise the insulating barrier of conductor and this conductor coated, insulating barrier comprises Ceramic silicon rubber flame retardant coating and flame retardant insulation, the Ceramic silicon rubber flame retardant coating coating conductor of insulating barrier, flame retardant insulation coating ceramic SiClx rubber flame retardant coating.
Wherein, the component of ceramic flame-retardant layer by mass: 100 parts, silicon rubber, silica 1 00 part, silicone oil 20 parts, halogen-free flame retardants 30 parts, coupling agent 10 parts, Vitrified powder 120 parts.
Wherein, the component of flame retardant insulation comprises by mass: ethylene copolymer 100 parts, compatilizer 10 parts, halogen-free flame retardants 250 parts, 5 parts, antioxidant, lubricant 5 parts, polymer elastomer 20 parts, coupling agent 3 parts, look female 10 parts.
Preparation method is as follows: after each component of Ceramic silicon rubber flame retardant coating and flame retardant insulation being mixed respectively, formed the structure of double-layer integrally by co-extrusion.The electric wire of the present embodiment can play resistance to fire action; even if surmount fire endurance burning still ablation can form hard containment vessel; containment vessel can prevent flame from extending to electric wire inside further; thus the conductor that protection is positioned at Ceramic silicon rubber flame retardant coating is not damaged, and guarantees the normal usage function of electric wire.The fire resistance of the electric wire of the present embodiment can reach the standard of VW-1 in U.S. UL1581.
Embodiment 4
The formula of the present embodiment is identical with embodiment 1, and difference is only the flame retardant insulation coating conductor of insulating barrier, the coated flame retardant insulation of Ceramic silicon rubber flame retardant coating.The electric wire of the present embodiment can play resistance to fire action; even if surmount fire endurance burning still ablation can form hard containment vessel; containment vessel can prevent flame from extending to electric wire inside further; thus the conductor that protection is positioned at Ceramic silicon rubber flame retardant coating is not damaged, and guarantees the normal usage function of electric wire.The fire resistance of the electric wire of the present embodiment can reach the standard of VW-1 in U.S. UL1581.
Embodiment 5
The formula of the present embodiment is identical with embodiment 2, and difference is only the flame retardant insulation coating conductor of insulating barrier, the coated flame retardant insulation of Ceramic silicon rubber flame retardant coating.The electric wire of the present embodiment can play resistance to fire action; even if surmount fire endurance burning still ablation can form hard containment vessel; containment vessel can prevent flame from extending to electric wire inside further; thus the conductor that protection is positioned at Ceramic silicon rubber flame retardant coating is not damaged, and guarantees the normal usage function of electric wire.The fire resistance of the electric wire of the present embodiment can reach the standard of VW-1 in U.S. UL1581.
Embodiment 6
The formula of the present embodiment is identical with embodiment 3, and difference is only the flame retardant insulation coating conductor of insulating barrier, the coated flame retardant insulation of Ceramic silicon rubber flame retardant coating.The electric wire of the present embodiment can play resistance to fire action; even if surmount fire endurance burning still ablation can form hard containment vessel; containment vessel can prevent flame from extending to electric wire inside further; thus the conductor that protection is positioned at Ceramic silicon rubber flame retardant coating is not damaged, and guarantees the normal usage function of electric wire.The fire resistance of the electric wire of the present embodiment can reach the standard of VW-1 in U.S. UL1581.
The Ceramic silicon rubber flame retardant coating of the various embodiments described above can also be wound for the fire-resistant composite band of ceramic; resistance to fire action can be played equally; even if surmount fire endurance burning still ablation can form hard containment vessel; containment vessel can prevent flame from extending to electric wire inside further; thus the conductor that protection is positioned at the fire-resistant composite band of ceramic is not damaged, and guarantees the normal usage function of electric wire.The fire resistance of the electric wire of the present embodiment can reach the standard of VW-1 in U.S. UL1581.
The present invention is not limited to above-mentioned embodiment, and those skilled in the art also can make multiple change accordingly, but to be anyly equal to the present invention or similar change all should be encompassed in the scope of the claims in the present invention.
Claims (5)
1. a fire resistant flame retardant electric wire, comprise the insulating barrier of conductor and this conductor coated, it is characterized in that: described insulating barrier comprises Ceramic silicon rubber flame retardant coating and flame retardant insulation, the component of described ceramic flame-retardant layer comprises by mass: 100 parts, silicon rubber, silicon dioxide 20 ~ 100 parts, silicone oil 1 ~ 20 part, halogen-free flame retardants 5 ~ 30 parts, coupling agent 0.1 ~ 10 part, Vitrified powder 20 ~ 120 parts, the component of described flame retardant insulation comprises by mass: ethylene copolymer and/or ethylene propylene diene rubber totally 100 parts, compatilizer 1 ~ 10 part, halogen-free flame retardants 80 ~ 250 parts, 0.1 ~ 5 part, antioxidant, lubricant 0.1 ~ 5 part, polymer elastomer 0 ~ 20 part, coupling agent 0 ~ 3 part, look mother 0 ~ 10 part.
2. fire resistant flame retardant electric wire as claimed in claim 1, is characterized in that: the coated described conductor of Ceramic silicon rubber flame retardant coating of described insulating barrier, the coated described Ceramic silicon rubber flame retardant coating of described flame retardant insulation.
3. fire resistant flame retardant electric wire as claimed in claim 1, is characterized in that: the coated described conductor of flame retardant insulation of described insulating barrier, the coated described flame retardant insulation of described Ceramic silicon rubber flame retardant coating.
4. fire resistant flame retardant electric wire as claimed in claim 1, is characterized in that: described ethylene copolymer is selected from one or more in ethylene-vinyl acetate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer.
5. fire resistant flame retardant electric wire as claimed in claim 1, is characterized in that: described Ceramic silicon rubber flame retardant coating is that the fire-resistant composite band of ceramic is entwined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008952.3A CN103065710B (en) | 2013-01-11 | 2013-01-11 | Fire resistant antiflaming wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310008952.3A CN103065710B (en) | 2013-01-11 | 2013-01-11 | Fire resistant antiflaming wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103065710A CN103065710A (en) | 2013-04-24 |
| CN103065710B true CN103065710B (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310008952.3A Active CN103065710B (en) | 2013-01-11 | 2013-01-11 | Fire resistant antiflaming wire |
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| Country | Link |
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| CN (1) | CN103065710B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345964B (en) * | 2013-07-01 | 2015-08-05 | 安徽虹都电缆集团有限公司 | A kind of industrial heat resistant fire-proof instrument cable and preparation technology thereof |
| CN115331868B (en) * | 2022-07-15 | 2023-06-20 | 广东南缆电缆有限公司 | Extrusion type silicon dioxide insulation fire-resistant cable |
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| CN1629216A (en) * | 2003-12-16 | 2005-06-22 | 深圳市沃尔热缩材料有限公司 | Halogen-free flame-retardant thermal-shrinkage sleeve materials and sleeve prepared thereby |
| CN102040839A (en) * | 2009-10-16 | 2011-05-04 | 青岛汉缆股份有限公司 | Formula for ceramicized silicon rubber cable material |
| CN102093626A (en) * | 2010-12-20 | 2011-06-15 | 安徽中鼎密封件股份有限公司 | Non-halogen fire resistant low-temperature shrinkable and heat-shrinkable pipe material and preparation method thereof |
| CN201927390U (en) * | 2011-01-04 | 2011-08-10 | 上海申远高温线有限公司 | Refractory ceramics silica rubber cable |
| CN102332331A (en) * | 2011-06-22 | 2012-01-25 | 江苏天地龙电缆有限公司 | Heat-resistant control cable utilized by nuclear power station |
| CN102766293A (en) * | 2011-08-16 | 2012-11-07 | 深圳市沃尔核材股份有限公司 | Radiation cross-linked low-smoke halogen-free red phosphorus-free flame retardant material and its application |
-
2013
- 2013-01-11 CN CN201310008952.3A patent/CN103065710B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629216A (en) * | 2003-12-16 | 2005-06-22 | 深圳市沃尔热缩材料有限公司 | Halogen-free flame-retardant thermal-shrinkage sleeve materials and sleeve prepared thereby |
| CN102040839A (en) * | 2009-10-16 | 2011-05-04 | 青岛汉缆股份有限公司 | Formula for ceramicized silicon rubber cable material |
| CN102093626A (en) * | 2010-12-20 | 2011-06-15 | 安徽中鼎密封件股份有限公司 | Non-halogen fire resistant low-temperature shrinkable and heat-shrinkable pipe material and preparation method thereof |
| CN201927390U (en) * | 2011-01-04 | 2011-08-10 | 上海申远高温线有限公司 | Refractory ceramics silica rubber cable |
| CN102332331A (en) * | 2011-06-22 | 2012-01-25 | 江苏天地龙电缆有限公司 | Heat-resistant control cable utilized by nuclear power station |
| CN102766293A (en) * | 2011-08-16 | 2012-11-07 | 深圳市沃尔核材股份有限公司 | Radiation cross-linked low-smoke halogen-free red phosphorus-free flame retardant material and its application |
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| CN103065710A (en) | 2013-04-24 |
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Address after: 518118 Wall Industrial Park, Lanjing North Road, Shenzhen Industrial Park, Pingshan New District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Patentee after: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee after: CHANGZHOU WOER HEAT-SHRINKABLE MATERIAL Co.,Ltd. Address before: 518118 Wall Industrial Park, Lanjing North Road, Shenzhen Industrial Park, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Patentee before: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee before: JINTAN WOER NEW MATERIAL Co.,Ltd. |
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Effective date of registration: 20210701 Address after: 518118 Wool Industrial Park, Lanjing North Road, Longtian Street, Pingshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Patentee after: CHANGZHOU WOER HEAT-SHRINKABLE MATERIAL Co.,Ltd. Address before: 518118 Wall Industrial Park, Lanjing North Road, Shenzhen Industrial Park, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Patentee before: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee before: CHANGZHOU WOER HEAT-SHRINKABLE MATERIAL Co.,Ltd. |
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