Iikhoyili ezigqunywe ngombala (ppgi/ppgl coil) zisekwe kwiphepha legalvanized dip-dip, ishidi legalvanized eshushu-dip, i-electro-galvanized sheet, njl. Emva kokunyangwa komphezulu (ukususwa kwekhemikhali kunye nonyango lokuguqulwa kweekhemikhali), enye okanye iileya ezininzi zezinto eziphilayo. iingubo zisetyenziswa kumphezulu, kwaye emva koko A p...
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