Shenzhen Sunbow Insulation Materials MFG. Co., Ltd. is ISO 9001:2008 certified and all products meet with UL, CSA, RoHS and REACH standards for the electrical industry. Our main products include all kinds of fiberglass sleevng, heat shrink tube, silicone rubber tube, PTFE teflon tube, expandable sleeving, Mylar tube, PVC tube, silicone rubber heat shrink tube, PTFE heat shrink tube, pvc heat shrink tube etc.