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(8 cores)
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
喀什市| 修武县| 无锡市| 庆云县| 保德县| 乐都县| 沙洋县| 黎川县| 遂昌县| 共和县| 丰镇市| 兴国县| 利川市| 湖州市| 通许县| 常宁市| 墨脱县| 罗定市| 筠连县| 大庆市| 胶州市| 攀枝花市| 石家庄市| 上高县| 固阳县| 汝城县| 城固县| 两当县| 繁峙县| 磐安县| 博客| 安龙县| 德安县| 炎陵县| 南丹县| 滁州市| 通渭县| 嘉义县| 天气| 吴旗县| 吕梁市|