Raw material kuumbwa uye zvivakwa zvePVC huni plastiki.PVC yemuti poda uye huni faibha uye inorganic kuzadza (calcium carbonate), lubricant, stabilizer, foaming agent, furo regulator, toner uye zvimwe zvine chekuita nekuwedzera (plasticizer, toughening agent, coupling agent), etc. 1, resin domest...
Verenga zvimwe