... 5) heat shrink insulation tube Brand name: dinghePlace of origin: zhejiang, China (mainland, Southeast coastal area)Appearance: straight, smooth, ... per the customer’s requestsClass: Grade AAlloy: 1235Professional for the communication cable, signal cable ,conditioner hose, pipe ect. the ... cloud performance 0.1mol/L,Hcl,480hclassgrade 7 Zhejiang Ventilation Hoses Film Heat Shrink Insulation Tube