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kedu ka esi arụpụta mpempe akwụkwọ PVC?
Kedu ka esi emepụta mpempe akwụkwọ plastik?Gụnyere usoro ndị a: calendering ihe plastik gbazere site na calenders n'ime mpempe akwụkwọ ihe nkiri plastik na-agbaze nke nwere oke a kara aka, na-ajụ ngwa ngwa ma debe mpempe akwụkwọ plastik na-agbaze na mmiri na-ekpo ọkụ, na-ewepụ mmiri na ihe nkiri plastik jụrụ oyi, heati ...GỤKWUO
