Quick Details Place of Origin:Guangdong China (Mainland) Brand Name: hongch Type: Insulation Sleeving Material: Fiberglass Application: High Voltage Rated Voltage: 7kv,:temperature :250C,certification: ISO9001,SGS ,UL Delivery Detail: 30days Specifications: 1) Nominal inside diameter: 2.3 - 10.0mm 2) Maximum working temperature: 200-250oC 3) Breakdown voltage: 7000V.Size: 25 -200m/roll,1m/piece; others can be produced on request