PC Twin wall Sheet with standard specifications of 2.1m width * 6m length, 4-12mm thickness, commonly used with two layers of 6-10mm. Our company also has three or four layers of PC sunshine board and honeycomb board (8-16mm), produced using new polycarbonate PC sheet material, with superior thermal insulation and sound insulation performance. It is a better energy-saving and environmentally friendly material for greenhouses, car sheds, and rain shelters. The standard color is transparent gray, brown, milky white, green, blue, and special colors can be customized