Film for Solar Cell Backsheet, Polyester Film, BOPET Film manufacturer / supplier in China, offering 300~500μ M Pet Film for Electrical Insulation with UL (6023D), 0.1-0.3 mm White Polyester Film with UL Certified for Solar Cell Back Material (CY11), China High Quality Polyester Stretch Pet Film Roll for Heddles (CY22L) and so on.