常見例句Our factory lies in Fushun, Liaoning Province.We focus on the production of Teflon and polyformaldehyde steel-backed compound materials.本廠主要生產(chǎn)聚四氟乙烯鋼背復(fù)合材料和聚甲醛鋼背復(fù)合材料。 返回 polyformaldehyde