... experiec 1. PP for crystallization type polymer, commonly used plastic in PP most light, density of just 0.91 ... 6.This product material PP, mainly used in communication products accessories Item name:cnc plastic rapid prototype makingCertification passed : Bureau ... veritas ISO 9001:2008 Certification passed : DongGuangHongHao Materials available: Plastic--ABS, PC, PV, PP,PMMA, POM, PA(NYLON), ...