... .6 years professional experiec 1. PP for crystallization type polymer, commonly used plastic in PP most light, density of just ... aging, brittle, yi deformation. 6.This product material PP, mainly used in communication products accessories Item name:cnc ... passed : DongGuangHongHao Materials available: Plastic--ABS, PC, PV, PP,PMMA, POM, PA(NYLON), RUBBER, SiliconeMetal--Aluminum, Copper, Brass ...