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
  • Contact us
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
花垣县| 瑞丽市| 盖州市| 青阳县| 合肥市| 永康市| 阳原县| 祁东县| 桂林市| 巴彦县| 莱州市| 南郑县| 玛多县| 环江| 阿图什市| 怀来县| 永登县| 潢川县| 南和县| 伊宁县| 庄河市| 清水县| 赣州市| 泾川县| 罗山县| 班戈县| 西昌市| 罗甸县| 凉山| 潞西市| 高青县| 盱眙县| 友谊县| 孝感市| 客服| 阿拉善左旗| 锡林浩特市| 汽车| 唐海县| 长汀县| 吴桥县|