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
Manufacture and processing of cold rolled steel - 翻译中...July 7, 2023Cold rolled steel is steel produced by cold rolling. Cold rolling is the further thinning of No.1 steel plate to the desired thickness at room temperature. Compared with hot-rolled steel plate, cold-r...view