... 3.Workers: more then 50 Greenhouse Polycarbonate Sheet used for swimming pool Specifications:1) Thickness: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, ... . airplanes, trains, liners, vehicles, notors boats, submarines and police glass shields.4. Telephone boths, advertising boards, light boxes and exhibition ... PC sheet is 250-300 times of that of ordinary glass,20-30 times of PMMA.4. Fire Retardant: Pass ...