... sound : recyclable SpecificationsPolypropylene Hollow Corrugated Plastic Sheet Material:PP Thickness:2mm-12mm Width:100mm-2400mm Weight:180GSM-3800GSM ... mainly manufactured from a high impact co-polymer polypropylene (PP) , which can be recycling,washable, durable and ... which is no pollution and recyclable, made of polypropylene (PP) and polyethylene (HDPE). Coreflute Sheet is high transparency, ...