greenhouse Polycarbonate Sheet used for swimming pool 1.Started In 2001 2.Factory area: ... 600,000m2 3.Workers: more then 50 Greenhouse Polycarbonate Sheet used for swimming pool Specifications:1) Thickness: 4mm, 6mm, 8mm, 10mm ... .MORE INFORMATION,PLS BE FREE CONTACT US! greenhouse Polycarbonate Sheet used for swimming pool