... 2) 20micron-80micron 3) For flexible duct 4) Environmental 5) heat shrink tube transparent Brand name: dinghePlace of origin: zhejiang, China (mainland, Southeast ... Silver, copper, blue or as per the customer’s requestsKind: Single-sided aluminum foil, double-sided aluminum foil, colored foil, aluminum ... 0.1mol/L,Hcl,480hclassgrade 7 Ventilation Hoses Winding Heat Heat Shrink Tube Transparent