CN106298042B - A kind of bunched cable that application is monitored suitable for life outdoor videos - Google Patents
A kind of bunched cable that application is monitored suitable for life outdoor videos Download PDFInfo
- Publication number
- CN106298042B CN106298042B CN201610664519.9A CN201610664519A CN106298042B CN 106298042 B CN106298042 B CN 106298042B CN 201610664519 A CN201610664519 A CN 201610664519A CN 106298042 B CN106298042 B CN 106298042B
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- Prior art keywords
- cable
- steel wire
- layer
- insulating barrier
- bunched
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention discloses a kind of bunched cable that application is monitored suitable for life outdoor videos, including three cable cores being distributed in a triangle, four steel wire ropes into Y-shaped distribution, distance is equal between the center of circle two-by-two of three cable cores, three in four steel wire ropes are respectively distributed between the center of circle two-by-two of three cable cores, another in four steel wire ropes be distributed in three cable cores middle, copper core conductor is by the second insulating barrier, aluminium foil wheat draws layer, tinned wird braiding layer, clad is coated successively, three cable cores and four steel wire ropes are by the first insulating barrier, netting screen layer, alloy jacket layer, restrictive coating is coated successively, the diameter of steel wire rope is a quarter of cable core diameter.The present invention is applied to the outdoor traffic such as " day net " and the wiring of security monitoring system, with high intensity, it is anti-rolling the characteristics of, be adapted to strong wind, situations such as accident is pullled, ground automobile is rolled.
Description
Technical field
The present invention relates to a kind of bunched cable, more particularly to a kind of bunched cable of video monitoring.
Background technology
Video monitoring is the important composition part in the fields such as modern production equipment, security monitoring, the construction of logistics net.But
Outdoor, high/low temperature difference variation is big, winter frequent accumulated snow, icing, and summer, extremely hot flame-retardancy requirements were high, strong wind, typhoon weather wind-force
Huge, ground automobile is frequently rolled, and these conditions propose strict demand to vision cable.
Existing video signal cable, especially video monitoring connect signal wire, mainly by electric conductor and from electric conductor by
Insulating barrier, the first woven wire cloth screen layer, the second woven wire cloth screen layer and the oversheath coated successively from inside to outside
Layer is constituted.Insulating barrier therein uses insulating material of polyethylene, can be used solid according to the technical indicators such as impedance, electric capacity difference
Coaxial insulation technology and the manufacturing technologies such as coaxial insulation technology that foam, make the vision signal stabilization that camera probe is obtained clearly pass
It is sent to processor.But product, because of material and structure limitation, the adaptability rolled to strong wind weather, automobile is not high, it is impossible to hold
By pull greatly under power and public way engineering truck by when the pressure that produces.
The content of the invention
Therefore, the present invention proposes a kind of bunched cable that application is monitored suitable for life outdoor videos.The bunched cable of the present invention should
For life outdoor videos monitoring, it is adaptable to the open air traffic such as " day net " and the wiring of security monitoring system, with high intensity, Ke Yishi
Answer strong wind, situations such as accident is pullled, ground automobile is rolled.
The researcher of the present invention adds steel wire rope in traditional cable, and it can improve the tensile strength of cable.So
And the researcher of the present invention has been surprisingly found that can improve bunched cable intensity, the inner structure of anti-rolling performance under study for action, i.e.
Bunched cable includes three cable cores being distributed in a triangle, four steel wire ropes into Y-shaped distribution, and three cable cores are two-by-two
Distance is equal between the center of circle, three in four steel wire ropes be respectively distributed between the center of circle two-by-two of three cable cores, four steel wires
Another in rope be distributed in the middle of three cable cores, the diameter of steel wire rope be cable core diameter a quarter.This is probably
Because three cable cores are distributed in three summits of isosceles triangle and steel wire rope be distributed in isosceles triangle three side midpoints and
The point midway of isosceles triangle, so that whole cable obtains unexpected anti-rolling performance.And section of steel wire rope
The diameter of area is that a quarter of cable core diameter can further improve the anti-rolling performance of cable again, and this is probably because steel
Cord is distributed in four points, so as to effectively disperse grinding pressure, so that the entirety for improving cable rolls performance.
Insulating barrier, clad and the restrictive coating of the bunched cable of the present invention use unique formula, can improve insulating barrier
Tensile strength and anti-rolling performance.Insulating barrier, clad and restrictive coating coordinate the cable core and steel wire rope inner structure of bunched cable, can
With the overall tensile intensity and anti-rolling performance of the bunched cable for further improving the present invention, so as to be highly suitable for regarding for outdoor
Frequency is monitored.
The invention provides a kind of bunched cable that application is monitored suitable for life outdoor videos, including three pieces are distributed in a triangle
Cable core, four steel wire rope, the first insulating barrier, netting screen layer, alloy jacket layer, the restrictive coatings that are distributed into Y-shaped, three cable cores
Distance is equal between the center of circle two-by-two, and three in four steel wire ropes are respectively distributed between the center of circle two-by-two of three cable cores, four
Another in steel wire rope be distributed in three cable cores middle, every cable core includes copper core conductor, the second insulating barrier, aluminium foil wheat
Layer, tinned wird braiding layer and clad are drawn, copper core conductor draws layer, tinned wird braiding layer, bag by the second insulating barrier, aluminium foil wheat
Coating is coated successively, and three cable cores and four steel wire ropes are coated successively by netting screen layer, alloy jacket layer, restrictive coating, and first is exhausted
Flame retardant filler is filled between edge layer, cable core and steel wire rope, the first insulating barrier and the second insulating barrier are made up of modified poly ethylene,
The diameter of steel wire rope is a quarter of cable core diameter.
Preferably, modified poly ethylene is made up of the raw material of following parts by weight：Ldpe resin 60-80, nitric acid
Gadolinium 8-12, silver sulfide 6-10, aluminum oxide 3-7, titanium sulfate 2-6, mica powder 5-8, methyl triacetoxysilane 4-6, plasticizer
3-5。
Preferably, clad is made up of the raw material of following parts by weight：Corvic 80-90, cerous sulfate 9-16, hydrogen
Lanthana 12-18, plasticizer 4-6, chlorinated paraffin 10-15, calcium carbonate 5-25, phosphoric acid tri-isopropyl benzene ester 10-12, zinc stannate 3-5.
Preferably, restrictive coating is made up of the raw material of following parts by weight：Corvic 80-100, zirconium-n-propylate 10-
20, potassium fluosilicate 8-15, sodium thiosulfate 10-20, mica 2-6, zinc oxide 1-5, plasticizer 3-5, ammonium polyphosphate 4-8, boiling
Stone flour 2-6.
Preferably, netting screen layer is made up of aluminum-magnesium alloy wire.
Preferably, alloy jacket layer is aluminium alloy jacket layer.
Preferably, flame retardant filler is glass fibre.
Modified poly ethylene raw material, clad raw material, the restrictive coating raw material of the present invention can pass through simply dry-mixed or melting
Mix each component and prepare, it can be processed as product by any suitable method known in the art, for example, being extruded as wire rod
With cable coating such as sheath and insulating barrier.
The present invention has advantages below：
1st, using advanced three cable cores and the fit structure and diameter proportion of four steel wire ropes, monitoring system is conducive to
Wiring, and intensity is high, it is anti-rolling.
2nd, insulating barrier uses modified poly ethylene composition, and wherein gadolinium nitrate improves the tensile strength of insulating barrier, and silver sulfide is improved
The anti-rolling performance of insulating barrier, so as to effectively protect cable core, and then protects bunched cable.
3rd, clad uses composite, and wherein cerous sulfate improves the tensile strength of clad, and lanthanum hydroxide improves cladding
The anti-rolling performance of layer, so as to effectively protect cable core, and then protects bunched cable.
4th, restrictive coating uses composite, and wherein zirconium-n-propylate improves the tensile strength of restrictive coating, and potassium fluosilicate improves shield
The anti-rolling performance of jacket layer, so as to effectively protect bunched cable, and then improves the tensile strength and anti-stone roller of bunched cable
Press performance.
Brief description of the drawings
Fig. 1 is the sectional view of the bunched cable of the present invention.
Embodiment
The present invention is described more fully with reference to the accompanying drawings, wherein illustrating the exemplary embodiment of the present invention.
Embodiment 1
Referring to Fig. 1, the bunched cable of application, including three cable cores 1, four being distributed in a triangle are monitored suitable for life outdoor videos
Steel wire rope 2 that root is distributed into Y-shaped, the first insulating barrier 4, netting screen layer 5, alloy jacket layer 6, restrictive coating 7, three cable cores
1 between any two apart from equal, three in four steel wire ropes 2 are respectively distributed to three cable cores 1 between any two, described
Another in four steel wire ropes 2 be distributed in three cable cores 1 middle, every cable core 1 include copper core conductor 11, second insulate
Layer 12, aluminium foil wheat draw layer 13, tinned wird braiding layer 14 and clad 15, and the copper core conductor 11 is by the second insulating barrier 12, aluminium
Paper tinsel wheat draws layer 13, tinned wird braiding layer 14, clad 15 to coat successively, three cable cores 1 and four steel wire ropes 2 quilt
First insulating barrier 4, netting screen layer 5, alloy jacket layer 6, restrictive coating 7 are coated successively, the first insulating barrier 4, the cable core 1 and described
Flame retardant filler 3 is filled between steel wire rope 2, the insulating barrier 12 of the first insulating barrier 4 and second is made up of modified poly ethylene, institute
The diameter for stating steel wire rope 2 is a quarter of the diameter of cable core 1.
Modified poly ethylene is made up of the raw material of following parts by weight：Ldpe resin 60, gadolinium nitrate 8, silver sulfide 6,
Aluminum oxide 3, titanium sulfate 2, mica powder 5, methyl triacetoxysilane 4, plasticizer 3.
Clad is made up of the raw material of following parts by weight：Corvic 80, cerous sulfate 9, lanthanum hydroxide 12, plasticizer
4, chlorinated paraffin 10, calcium carbonate 5, phosphoric acid tri-isopropyl benzene ester 10, zinc stannate 3.
Restrictive coating is made up of the raw material of following parts by weight：Corvic 80, zirconium-n-propylate 10, potassium fluosilicate 8 is thio
Sodium sulphate 10, mica 2, zinc oxide 1, plasticizer 3, ammonium polyphosphate 4, zeolite powder 2.
Using Yangzhou Hua Hui detecting instruments Co., Ltd universal testing machine to the insulating barrier of embodiment 1, clad,
Restrictive coating carries out tensile test, and the tensile strength of gained is respectively 15MPa, 18MPa, 21MPa.
The pressure that the bunched cable of embodiment 1 applies each 600MPa is carried out rolling test using single roller roll squeezer.Collection
The number of times of beam cable failure is more than 800 times.
Embodiment 2
In addition to modified poly ethylene, clad, restrictive coating, remaining be the same as Example 1.
Modified poly ethylene is made up of the raw material of following parts by weight：Ldpe resin 80, gadolinium nitrate 12, silver sulfide
10, aluminum oxide 7, titanium sulfate 6, mica powder 8, methyl triacetoxysilane 6, plasticizer 5.
Clad is made up of the raw material of following parts by weight：Corvic 90, cerous sulfate 16, lanthanum hydroxide 18, plasticising
Agent 6, chlorinated paraffin 15, calcium carbonate 25, phosphoric acid tri-isopropyl benzene ester 12, zinc stannate 5.
Restrictive coating is made up of the raw material of following parts by weight：Corvic 100, zirconium-n-propylate 20, potassium fluosilicate 15, sulphur
Sodium thiosulfate 20, mica 6, zinc oxide 5, plasticizer 5, ammonium polyphosphate 8, zeolite powder 6.
Using Yangzhou Hua Hui detecting instruments Co., Ltd universal testing machine to the insulating barrier of embodiment 1, clad,
Restrictive coating carries out tensile test, and the tensile strength of gained is respectively 17MPa, 21MPa, 25MPa.
The pressure that the bunched cable of embodiment 1 applies each 600MPa is carried out rolling test using single roller roll squeezer.Collection
The number of times of beam cable failure is more than 800 times.
Comparative example 1
In addition to the diameter of steel wire rope 2 is 1/2nd of the diameter of cable core 1, remaining be the same as Example 1.
The pressure that the bunched cable of embodiment 1 applies each 600MPa is carried out rolling test using single roller roll squeezer.Collection
The number of times of beam cable failure is 220 times.
Comparative example 2
In addition to using four cable cores, five steel wire ropes, remaining be the same as Example 1.
The pressure that the bunched cable of embodiment 1 applies each 600MPa is carried out rolling test using single roller roll squeezer.Collection
The number of times of beam cable failure is 280 times.
Comparative example 3
In addition to modified poly ethylene is free of zirconium-n-propylate without gadolinium nitrate, clad without cerous sulfate, restrictive coating, remaining is same
Embodiment 1.
Using Yangzhou Hua Hui detecting instruments Co., Ltd universal testing machine to the insulating barrier of embodiment 1, clad,
Restrictive coating carries out tensile test, and the tensile strength of gained is respectively 2.5MPa, 1.6MPa, 1.8MPa.
The pressure that the bunched cable of embodiment 1 applies each 600MPa is carried out rolling test using single roller roll squeezer.Collection
The number of times of beam cable failure is more than 800 times.
Comparative example 4
In addition to modified poly ethylene is free of potassium fluosilicate without silver sulfide, clad without lanthanum hydroxide, restrictive coating, remaining
Be the same as Example 1.
Using Yangzhou Hua Hui detecting instruments Co., Ltd universal testing machine to the insulating barrier of embodiment 1, clad,
Restrictive coating carries out tensile test, and the tensile strength of gained is respectively 15MPa, 18MPa, 21MPa.
The pressure that the bunched cable of embodiment 1 applies each 600MPa is carried out rolling test using single roller roll squeezer.Collection
The number of times of beam cable failure 650 times.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, will change in specific embodiments and applications, and this specification content should not be construed as to the present invention
Limitation.
Claims (6)
1. a kind of bunched cable that application is monitored suitable for life outdoor videos, including three be distributed in a triangle cable core, four into Y words
Steel wire rope, the first insulating barrier, netting screen layer, alloy jacket layer, the restrictive coating of shape distribution, the centers of circle two-by-two of three cable cores it
Between distance it is equal, three in four steel wire ropes are respectively distributed between the center of circle two-by-two of three cable cores, described four
Another in root steel wire rope be distributed in three cable cores middle, every cable core include copper core conductor, the second insulating barrier,
Aluminium foil wheat draws layer, tinned wird braiding layer and clad, and the copper core conductor is drawn by second insulating barrier, the aluminium foil wheat
Layer, the tinned wird braiding layer, the clad are coated successively, and three cable cores and four steel wire ropes are compiled by described
Net screen layer, the alloy jacket layer, the restrictive coating are coated successively, first insulating barrier, the cable core and the steel wire rope
Between be filled with flame retardant filler, first insulating barrier and second insulating barrier be made up of modified poly ethylene, the steel wire
The diameter of rope is a quarter of the cable core diameter；The modified poly ethylene is made up of the raw material of following parts by weight：Low-density
Polyvinyl resin 60-80, gadolinium nitrate 8-12, silver sulfide 6-10, aluminum oxide 3-7, titanium sulfate 2-6, mica powder 5-8, the second of methyl three
Acyloxy silane 4-6, plasticizer 3-5.
2. the bunched cable according to claim 1 that application is monitored suitable for life outdoor videos, wherein, the clad is by as follows
The raw material composition of parts by weight：Corvic 80-90, cerous sulfate 9-16, lanthanum hydroxide 12-18, plasticizer 4-6, chlorination stone
Wax 10-15, calcium carbonate 5-25, phosphoric acid tri-isopropyl benzene ester 10-12, zinc stannate 3-5.
3. it is according to claim 1 or 2 suitable for life outdoor videos monitor application bunched cable, wherein, the restrictive coating by
The raw material composition of following parts by weight：Corvic 80-100, zirconium-n-propylate 10-20, potassium fluosilicate 8-15, sodium thiosulfate
10-20, mica 2-6, zinc oxide 1-5, plasticizer 3-5, ammonium polyphosphate 4-8, zeolite powder 2-6.
4. the bunched cable according to claim 1 or 2 that application is monitored suitable for life outdoor videos, wherein, the netting shielding
Layer is made up of aluminum-magnesium alloy wire.
5. the bunched cable according to claim 1 or 2 that application is monitored suitable for life outdoor videos, wherein, the alloy jacket layer
For aluminium alloy jacket layer.
6. the bunched cable according to claim 1 or 2 that application is monitored suitable for life outdoor videos, wherein, the flame resistant filler
Thing is glass fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664519.9A CN106298042B (en) | 2016-08-12 | 2016-08-12 | A kind of bunched cable that application is monitored suitable for life outdoor videos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664519.9A CN106298042B (en) | 2016-08-12 | 2016-08-12 | A kind of bunched cable that application is monitored suitable for life outdoor videos |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106298042A CN106298042A (en) | 2017-01-04 |
| CN106298042B true CN106298042B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610664519.9A Expired - Fee Related CN106298042B (en) | 2016-08-12 | 2016-08-12 | A kind of bunched cable that application is monitored suitable for life outdoor videos |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689735U (en) * | 2010-05-05 | 2010-12-29 | 深圳市联嘉祥科技股份有限公司 | Low-smoke flame-retardant tensile cable special for monitoring of elevator |
| CN201994134U (en) * | 2010-12-01 | 2011-09-28 | 浙江天杰实业有限公司 | Bundling-type multi-core composite cable |
| CN203406080U (en) * | 2013-08-19 | 2014-01-22 | 福建通宇电缆有限公司 | Lifter cable |
| CN204066831U (en) * | 2014-10-24 | 2014-12-31 | 泰通线缆有限公司 | A kind of lift private cable |
| CN205194372U (en) * | 2015-11-19 | 2016-04-27 | 万光电缆有限公司 | Cable |
| CN105575525A (en) * | 2016-02-03 | 2016-05-11 | 安徽华联电缆集团有限公司 | Anti-corrosion waterproof cable for ship |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8008577B2 (en) * | 2006-12-21 | 2011-08-30 | Prysmian Energia Cabos E Sistemas Do Brasil S.A. | Constructive arrangement in an umbilical cable and a process for the manufacture thereof |
-
2016
- 2016-08-12 CN CN201610664519.9A patent/CN106298042B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689735U (en) * | 2010-05-05 | 2010-12-29 | 深圳市联嘉祥科技股份有限公司 | Low-smoke flame-retardant tensile cable special for monitoring of elevator |
| CN201994134U (en) * | 2010-12-01 | 2011-09-28 | 浙江天杰实业有限公司 | Bundling-type multi-core composite cable |
| CN203406080U (en) * | 2013-08-19 | 2014-01-22 | 福建通宇电缆有限公司 | Lifter cable |
| CN204066831U (en) * | 2014-10-24 | 2014-12-31 | 泰通线缆有限公司 | A kind of lift private cable |
| CN205194372U (en) * | 2015-11-19 | 2016-04-27 | 万光电缆有限公司 | Cable |
| CN105575525A (en) * | 2016-02-03 | 2016-05-11 | 安徽华联电缆集团有限公司 | Anti-corrosion waterproof cable for ship |
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| Publication number | Publication date |
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| CN106298042A (en) | 2017-01-04 |
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Address after: 311300 Ling'an Economic Development Zone, Zhejiang, Hangzhou Applicant after: Hangzhou Hing Polytron Technologies Inc Address before: 311300 Ling'an Economic Development Zone, Zhejiang, Hangzhou Applicant before: Hangzhou Xingfa Transmission Equipment Co., Ltd. |
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