Dear Consumer, We Zhengzhou VIC Water Blocking Materials of Cable Co., Ltd in china is a manufacturer of No-conductive, Film Laminated, Single side, Strong water, No-dust, Non-woven water blocking tapes and Semi-conductive Buffer, Nylon, non woven, cotton woven, polyester, butyl buffer, copper woven tapes, swelling yarns, filler yarns, polymer; fire retardant glass tapes, airproof adhibit tapes, copper woven shield tapes. These tapes can used to shield and binder of conductor and core of optical fiber cable, power cable for resist water, have no causticity. If you are interest in these products please feel free to contact us. Regards, Ms. Lee Zhengzhou VIC Water Blocking Materials of Cable Co., Ltd. www.weike-tapes.com