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Ubwino wa 4 Wogwiritsa Ntchito PVC Padziko Lonse Lopanga Nsapato
Dziko la kamangidwe ka nsapato ndi kupanga nsapato lakula kwambiri m'zaka mazana aŵiri zapitazi.Zapita masiku okhala ndi wobvala mphesa m'modzi akutumikira tauni yonse.Kukula kwa mafakitale kwabweretsa kusintha kwakukulu, kuyambira momwe nsapato zimapangidwira kugulitsa ...Werengani zambiri -
Zida Zabwino Kwambiri pa FOOTWEAR Industrial
Makampani opanga nsapato amafunikira zida zolimba kwambiri zamakina, zogwira mtima pakukonza, zatsopano komanso mawonekedwe apamwamba.PVC mankhwala amapangidwa mwaluso kuti akwaniritse izi.Mapangidwe a PVC mankhwala amafanana ndi ...Werengani zambiri -
Mbiri ya PVC
Nthawi yoyamba yomwe PVC idapezeka mwangozi mu 1872 ndi wasayansi waku Germany, Eugen Baumann.Idapangidwa ngati botolo la vinyl chloride yomwe idasiyidwa padzuwa pomwe idapangidwa polima.Chakumapeto kwa zaka za m'ma 1800 gulu la ...Werengani zambiri