CN107293371B - 一种建筑施工专用安全型供电电缆及其制备方法 - Google Patents

一种建筑施工专用安全型供电电缆及其制备方法 Download PDF

Info

Publication number
CN107293371B
CN107293371B CN201710519930.1A CN201710519930A CN107293371B CN 107293371 B CN107293371 B CN 107293371B CN 201710519930 A CN201710519930 A CN 201710519930A CN 107293371 B CN107293371 B CN 107293371B
Authority
CN
China
Prior art keywords
layer
wires
compression
outer side
insulating layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710519930.1A
Other languages
English (en)
Other versions
CN107293371A (zh
Inventor
曾令果
李志均
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Yufeng Wire & Cable Co ltd
Original Assignee
YUFENG TECHNOLOGY CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YUFENG TECHNOLOGY CO LTD filed Critical YUFENG TECHNOLOGY CO LTD
Priority to CN201710519930.1A priority Critical patent/CN107293371B/zh
Publication of CN107293371A publication Critical patent/CN107293371A/zh
Application granted granted Critical
Publication of CN107293371B publication Critical patent/CN107293371B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06Insulating conductors or cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22Sheathing; Armouring; Screening; Applying other protective layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/02Disposition of insulation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/1825Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/183Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)

Abstract

本发明公开了一种建筑施工专用安全型供电电缆,包括导线,所述导线的外侧套接有耐高温绝缘层,且导线沿耐高温绝缘层的中心呈均匀分布,相邻的导线与耐高温绝缘层之间设置填充丝,本发明还公开了一种建筑施工专用安全型供电电缆制备方法,包括以下步骤:步骤一:选取合适的导线和填充丝,并初步将导线和填充丝捆扎在一起,得到捆扎线组;步骤二:在捆扎线组的外侧套接耐高温绝缘层;步骤三:制取陶瓷纤维层,将陶瓷纤维层卷绕在耐高温绝缘层上,该电缆通过合理的结构设置能够很大程度上提高线缆的抗压抗破损能力,并且抗压性能得到很大的提高,更适用于施工现场,避免安全事故的发生,其抗拉性能相比一般的电缆,效果更佳。

Description

一种建筑施工专用安全型供电电缆及其制备方法
技术领域
本发明涉及电缆技术领域,具体为一种建筑施工专用安全型供电电缆及其制备方法。
背景技术
建筑施工工地环境复杂,存在大量的机器以及施工材料,而建筑施工时需要使用到大功率的机器,此时需要对其进行供电,一般会选择较粗的电缆用来供电,但是现有技术下的电缆一般结构比较简单,在使用的过程中,使用防护材料对其保护,来达到避免漏电和破损,实现安全施工的目的,这样的防护效果差,并且防破损效果差,经常因为施工材料挤压或者不同的情况导致线缆破损,进而引发安全事故。
发明内容
本发明的目的在于提供一种建筑施工专用安全型供电电缆,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种建筑施工专用安全型供电电缆,包括导线,所述导线的外侧套接有耐高温绝缘层,且导线沿耐高温绝缘层的中心呈均匀分布,相邻的导线与耐高温绝缘层之间设置填充丝,所述耐高温绝缘层套接有内保护层,所述内保护层的两侧均设置抗压弹性块,所述抗压弹性块的外侧套接包覆层,所述包覆层的外侧套接高韧性层,且高韧性层的外侧套接防护层,所述高韧性层的外壁中贯穿设置加强丝。
优选的,所述抗压弹性块沿内保护层的中部呈对称设置,且抗压弹性块为闭合结构。
优选的,所述加强丝设置不少于八个,所述加强丝之间呈等距离设置。
优选的,所述填充丝为铜丝。
优选的,所述耐高温绝缘层为多晶硅橡胶层。
优选的,所述内保护层为陶瓷纤维层,所述包覆层为玻璃纤维层。
优选的,所述抗压弹性块为高韧性橡胶层。
优选的,所述高韧性层与防护层均为PET层,且加强丝为石棉丝。
一种建筑施工专用安全型供电电缆制备方法,包括以下步骤:
步骤一:选取合适的导线和填充丝,并初步将导线和填充丝捆扎在一起,得到捆扎线组;
步骤二:在捆扎线组的外侧套接耐高温绝缘层,将导线与外部隔开;
步骤三:制取陶瓷纤维层,将陶瓷纤维层卷绕在耐高温绝缘层上,卷绕过程不留缝隙;
步骤四:制取呈长条状的抗压弹性块,抗压弹性块的内侧面是圆弧形,抗压弹性块的外侧成椭圆形;
步骤五:将步骤四制得的抗压弹性块对应卡在陶瓷纤维层的外侧形成闭合状,并在抗压弹性块外侧间隔套接铜丝以达到暂时固定的目的;
步骤六:继续步骤五的过程,在抗压弹性块的外侧套接玻璃纤维层;
步骤七:将石棉丝置于PET层的生产过程中,制作出高韧性层,并且将高韧性层套接在玻璃纤维层外侧;
步骤八:在高韧性层包覆PET防护层,至此,该电缆制作完成。
与现有技术相比,本发明的有益效果是:该电缆通过合理的结构设置能够很大程度上提高线缆的抗压抗破损能力,并且抗压性能得到很大的提高,更适用于施工现场,避免安全事故的发生,其抗拉性能相比一般的电缆,效果更佳。
附图说明
图1为本发明的剖面图;
图2为本发明的结构示意图。
图中:导线1、填充丝2、耐高温绝缘层3、内保护层4、抗压弹性块5、包覆层6、高韧性层7、加强丝8、防护层9。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
请参阅图1-2,本发明提供一种技术方案:一种建筑施工专用安全型供电电缆,包括导线1,导线1的外侧套接有耐高温绝缘层3,且导线1沿耐高温绝缘层3的中心呈均匀分布,相邻的导线1与耐高温绝缘层3之间设置填充丝2,通过设置的填充丝2,不仅能够提高电缆的抗压性能,而且能够很好的提高电缆的抗拉性能,替代导线1受拉,使用寿命强。
耐高温绝缘层3套接有内保护层4,内保护层4的两侧均设置抗压弹性块5,抗压弹性块5的外侧套接包覆层6,包覆层6的外侧套接高韧性层7,且高韧性层7的外侧套接防护层9,高韧性层7的外壁中贯穿设置加强丝8。
抗压弹性块5沿内保护层4的中部呈对称设置,且抗压弹性块5为闭合结构。设置的抗压弹性块5能够很好的保护内部的导线1,避免受到直接的压力,并且抗压弹性块5自身具有很好的回复弹性,在受到压力后能够很好的回复,提高装置的整体使用质量。
加强丝8设置不少于八个,加强丝8之间呈等距离设置。通过设置加强丝8,能够提高高韧性层7的使用质量,并且通过高韧性层7的使用,能够对抗压弹性块5与包覆层6实现包裹,整体结构完整性得到很大的提高,电缆表面收到破损不会松散。
填充丝2为铜丝。耐高温绝缘层3为多晶硅橡胶层。内保护层4为陶瓷纤维层,包覆层6为玻璃纤维层。抗压弹性块5为高韧性橡胶层。高韧性层7与防护层9均为PET层,且加强丝8为石棉丝,通过设置的石棉丝,能够在保证电缆的整体功能性同时,具有一定的防火功能,配合多晶硅橡胶层的使用,进一步的提高电缆的整体防火性能。
一种建筑施工专用安全型供电电缆制备方法,包括以下步骤:
步骤一:选取合适的导线1和填充丝2,并初步将导线1和填充丝2捆扎在一起,得到捆扎线组;
步骤二:在捆扎线组的外侧套接耐高温绝缘层3,将导线1与外部隔开;
步骤三:制取陶瓷纤维层,将陶瓷纤维层卷绕在耐高温绝缘层3上,卷绕过程不留缝隙;
步骤四:制取呈长条状的抗压弹性块5,抗压弹性块5的内侧面是圆弧形,抗压弹性块5的外侧成椭圆形;
步骤五:将步骤四制得的抗压弹性块5对应卡在陶瓷纤维层的外侧形成闭合状,并在抗压弹性块5外侧间隔套接铜丝以达到暂时固定的目的;
步骤六:继续步骤五的过程,在抗压弹性块5的外侧套接玻璃纤维层;
步骤七:将石棉丝置于PET层的生产过程中,制作出高韧性层7,并且将高韧性层7套接在玻璃纤维层外侧;
步骤八:在高韧性层7包覆PET防护层9,至此,该电缆制作完成。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。

Claims (2)

1.一种建筑施工专用安全型供电电缆,包括导线(1),其特征在于:所述导线(1)的外侧套接有耐高温绝缘层(3),且导线(1)沿耐高温绝缘层(3)的中心呈均匀分布,相邻的导线(1)与耐高温绝缘层(3)之间设置填充丝(2),所述耐高温绝缘层(3)套接有内保护层(4),所述内保护层(4)的两侧均设置抗压弹性块(5),所述抗压弹性块(5)的外侧套接包覆层(6),所述包覆层(6)的外侧套接高韧性层(7),且高韧性层(7)的外侧套接防护层(9),所述高韧性层(7)的外壁中贯穿设置加强丝(8);
所述抗压弹性块(5)沿内保护层(4)的中部呈对称设置,且抗压弹性块(5)为闭合结构;
所述抗压弹性块(5)为高韧性橡胶层;
所述加强丝(8)设置不少于八个,所述加强丝(8)之间呈等距离设置;
所述填充丝(2)为铜丝;
所述耐高温绝缘层(3)为多晶硅橡胶层;
所述内保护层(4)为陶瓷纤维层,所述包覆层(6)为玻璃纤维层;
所述高韧性层(7)与防护层(9)均为PET层,且加强丝(8)为石棉丝。
2.一种如权利要求1所述的建筑施工专用安全型供电电缆的制备方法,包括以下步骤:
步骤一:选取合适的导线(1)和填充丝(2),并初步将导线(1)和填充丝(2)捆扎在一起,得到捆扎线组;
步骤二:在捆扎线组的外侧套接耐高温绝缘层(3),将导线(1)与外部隔开;
步骤三:制取陶瓷纤维层,将陶瓷纤维层卷绕在耐高温绝缘层(3)上,卷绕过程不留缝隙;
步骤四:制取呈长条状的抗压弹性块(5),抗压弹性块(5)的内侧面是圆弧形,抗压弹性块(5)的外侧成椭圆形;
步骤五:将步骤四制得的抗压弹性块(5)对应卡在陶瓷纤维层的外侧形成闭合状,并在抗压弹性块(5)外侧间隔套接铜丝以达到暂时固定的目的;
步骤六:继续步骤五的过程,在抗压弹性块(5)的外侧套接玻璃纤维层;
步骤七:将石棉丝置于PET层的生产过程中,制作出高韧性层(7),并且将高韧性层(7)套接在玻璃纤维层外侧;
步骤八:在高韧性层(7)外侧包覆PET防护层(9),至此,该电缆制作完成。
CN201710519930.1A 2017-06-30 2017-06-30 一种建筑施工专用安全型供电电缆及其制备方法 Active CN107293371B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710519930.1A CN107293371B (zh) 2017-06-30 2017-06-30 一种建筑施工专用安全型供电电缆及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710519930.1A CN107293371B (zh) 2017-06-30 2017-06-30 一种建筑施工专用安全型供电电缆及其制备方法

Publications (2)

Publication Number Publication Date
CN107293371A CN107293371A (zh) 2017-10-24
CN107293371B true CN107293371B (zh) 2023-07-07

Family

ID=60098876

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710519930.1A Active CN107293371B (zh) 2017-06-30 2017-06-30 一种建筑施工专用安全型供电电缆及其制备方法

Country Status (1)

Country Link
CN (1) CN107293371B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110349701A (zh) * 2019-07-09 2019-10-18 襄阳市诺立信电线电缆有限公司 一种高空用高韧性抗撕裂电缆及其生产工艺
CN113140363B (zh) * 2021-04-25 2022-11-18 渝丰科技股份有限公司 一种抗压型电缆

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1149481A (en) * 1980-04-28 1983-07-05 Textured Products, Inc. Flame resistant insulated electrical wire and cable construction
JPH07220533A (ja) * 1994-02-04 1995-08-18 Hitachi Cable Ltd 耐熱絶縁電線
CN104851481A (zh) * 2015-05-27 2015-08-19 北京亨通斯博通讯科技有限公司 耐火铝合金电缆
CN205177467U (zh) * 2015-09-01 2016-04-20 贵州黔能电缆有限公司 一种耐高温抗拉伸稳定型电缆

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1543694A (zh) * 2001-06-20 2004-11-03 �����ա��ڵ� 导体系统
US7939764B2 (en) * 2007-09-25 2011-05-10 Samuel Gottfried Fire, heat and high voltage cable protection wrap
CN103714898A (zh) * 2012-09-29 2014-04-09 无锡荣诚电工材料有限公司 一种阻燃电子计算机用信号电缆
CN104575780A (zh) * 2013-10-12 2015-04-29 宁夏海洋线缆有限公司 一种耐火动力软电缆
CN104575742A (zh) * 2013-10-13 2015-04-29 宁夏海洋线缆有限公司 一种抗干扰电缆
CN204423937U (zh) * 2014-12-30 2015-06-24 宁波神雕电缆有限公司 一种内部带有框架结构的高强度耐高温电缆
CN204632362U (zh) * 2015-03-13 2015-09-09 上海太平洋电线电缆有限公司 一种舰船用防火电缆
CN205679642U (zh) * 2016-06-11 2016-11-09 重庆渝丰电线电缆有限公司 一种电线电缆用电桥夹具
CN206116065U (zh) * 2016-08-31 2017-04-19 江苏帝一集团有限公司 一种新型薄壁耐高温电缆
JP6133484B1 (ja) * 2016-09-15 2017-05-24 古河電気工業株式会社 電力ケーブルおよびその製造方法
CN206961590U (zh) * 2017-06-30 2018-02-02 重庆渝丰鑫新线缆科技有限公司 一种建筑施工专用安全型供电电缆

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1149481A (en) * 1980-04-28 1983-07-05 Textured Products, Inc. Flame resistant insulated electrical wire and cable construction
JPH07220533A (ja) * 1994-02-04 1995-08-18 Hitachi Cable Ltd 耐熱絶縁電線
CN104851481A (zh) * 2015-05-27 2015-08-19 北京亨通斯博通讯科技有限公司 耐火铝合金电缆
CN205177467U (zh) * 2015-09-01 2016-04-20 贵州黔能电缆有限公司 一种耐高温抗拉伸稳定型电缆

Also Published As

Publication number Publication date
CN107293371A (zh) 2017-10-24

Similar Documents

Publication Publication Date Title
CN104730667B (zh) 骨架式光缆及制作方法
CN107293371B (zh) 一种建筑施工专用安全型供电电缆及其制备方法
CN110136892A (zh) 一种陶瓷化聚烯烃防火中压电缆制造方法
CN205645380U (zh) 野外工程作业用环保耐温耐腐蚀抗拉电缆
CN202332363U (zh) 风能发电用耐寒耐扭转风能用软电缆
CN205158934U (zh) 一种拖链用软电缆
CN111863307A (zh) 风电叶片内避雷系统的铝合金绝缘软电缆及其制作方法
CN208315271U (zh) 一种弯曲方便的高强度电缆
CN114927268B (zh) 一种采煤机用光电复合电缆
CN107527681A (zh) 一种颜色相间隔开的电缆或光缆及其制造方法
CN207718905U (zh) 一种耐拖拽光电复合缆
CN115841894A (zh) 一种电缆的制备工艺
CN215265699U (zh) 一种新型耐高温防火焰的阻燃型控制电缆
KR101590847B1 (ko) 방수 파우더를 이용한 방수 코어, 이를 구비한 방수 립코드 및 그 제조방법
CN210722490U (zh) 一种节能环保铜合金线线材
CN207165290U (zh) 一种防折弯电缆
CN206961590U (zh) 一种建筑施工专用安全型供电电缆
CN202871347U (zh) 一种耐高温型钢包车用控制电缆
CN204632364U (zh) 通信电源用铜包铝软电缆
CN206672693U (zh) 一种防火中压多芯电缆
CN109148011A (zh) 一种塑料电线电缆及其制造工艺
CN218631431U (zh) 一种柔软型薄膜绕包绝缘电线
CN104240849B (zh) 一种带气体保护的推丝焊枪电缆
CN218159707U (zh) 一种聚氯乙烯绝缘钢带铠装阻燃聚氯乙烯护套电力电缆
CN216053944U (zh) 一种耐腐蚀工业扁电缆

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20190329

Address after: 402247 Shuangfu Street, Jiangjin District, Chongqing, 299 Shuanggao Road

Applicant after: CHONGQING YUFENG WIRE & CABLE CO.,LTD.

Address before: 402247 Shuangfu Industrial Park, Jiangjin District, Chongqing

Applicant before: CHONGQING YUFENG XINXIN CABLE TECHNOLOGY CO.,LTD.

TA01 Transfer of patent application right
CB02 Change of applicant information

Address after: 402260 No. 299, Shuanggao Road, Shuangfu street, Jiangjin District, Chongqing

Applicant after: Yufeng Technology Co.,Ltd.

Address before: 402247 No. 299, Shuanggao Road, Shuangfu street, Jiangjin District, Chongqing

Applicant before: CHONGQING YUFENG WIRE & CABLE Co.,Ltd.

CB02 Change of applicant information
GR01 Patent grant
GR01 Patent grant