... resistance etc. With UL, SGS, RoHS, FDA grades. Polyphenylene Oxide, PPO for short, is one of the five general purpose engineering ... under high temperature is the best among all thermoplastics. Thus, PPO is widely used in fields like electric and electrical appliance ... industry. Our products list:Common engineering plastics: PC, ABS, PP, PPO, HIPS, PA6, PA66, PPS, POM, PET, PBTSpecial high polymer: PPA ...