중국 독립 브랜드 엑스포July 1, 2022During 전시, CNPC 초대 참여 "Chinese Enterprise Brand Building Sub-Forum" State-소유 Assets Supervision 및 Administration Commission."Lubricat...view
Polypropylene - 翻译中...June 25, 2023Today's English article mainly introduces polypropylene, polyethylene (PE) is a thermoplastic resin produced by polymerization of ethylene. Polyethylene odorless, non-toxic, feel like wax, has exc...view