POM-HENGLI POM-C-Polyoxymethylene Copolymer-HL POM-ZHONGHAO POM-C-Polyoxymethylene Copolymer-ZH POM-General Purpose Grades-ZH Reinforced Grades-ZH UV Resistant & Weatherable Grades-ZH Antistatic & Self-lubricating & Wear Resistant Grades-ZH