... 2.Factory area:30,000m2 3.Workers: more then 50 PC hollow sheet1.Started In 20032.Factory area:30,000m2 3.Workers ... : more then 100 PC hollow sheetSpecifications:1) Thickness: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, ... ) Flame resistance: rated class B17) Sound and heat proof8) Hollow polycarbonate sheeting is an engineering plastic of excellent integration capability ...