Blow molding, eo hape e tsejoang e le hollow blow molding, ke mokhoa o ntseng o hola ka potlako oa ho lokisa polasetiki.Nakong ea Ntoa ea Bobeli ea Lefatše, mokhoa oa ho bopa o ile oa qala ho sebelisoa ho hlahisa linkho tse tlase tsa polyethylene.Ho elella bofelong ba lilemo tsa bo-1950, ka tsoalo ea polyeth e phahameng haholo ...
Bala haholoanyane