欧洲妇女成人淫片aaa视频,高清无吗,成人精品免费网站,国产精品久久免费视频,在线一二区,在线中文字幕播放,偿还的影视高清在线观看

search
Hot keywords
  • 聯(lián)系我們內(nèi)容
Mining optical cable(12cores)
Mining optical cables are made by inserting single-mode or multi-mode optical fibers into loose tubes made of high modulus plastic, and filling the tubes with water-resistant compounds. The center of the cable core is a phosphated steel wire or a steel wire rope extruded with polyethylene. A loose sleeve (or filling rope and signal line) is twisted around the center to strengthen the core and form a compact and circular cable core. The gaps inside the cable core are filled with water-resistant filling material, steel polyethylene bonded inner sheath, and blue flame-retardant PVC sheath to form the cable. The mining optical cable has a flame-retardant sheath, which can have a full section water-resistant structure to ensure good water and moisture resistance. The loose sleeve is filled with special grease to provide critical protection for the optical fiber.
< >
Contact us
  • Qinhuangdao Wolf Cable Co., Ltd
  • No. 4 Zhuhai Road, Shanhaiguan Economic and Technological
  • 19933636285 18833522049
  • 18833522049@139.com
Scan to follow us
德庆县| 东方市| 淮安市| 安塞县| 贺兰县| 惠东县| 阳新县| 英山县| 武冈市| 长沙县| 隆昌县| 阜新市| 马鞍山市| 太和县| 连云港市| 宁乡县| 海盐县| 满洲里市| 都江堰市| 吉安县| 嘉义市| 汝南县| 达尔| 登封市| 莲花县| 都昌县| 高安市| 洪泽县| 和硕县| 汾西县| 迁西县| 册亨县| 菏泽市| 唐山市| 东平县| 深水埗区| 横山县| 灵寿县| 搜索| 宁强县| 乃东县|