PVC polyvinyl chloride chigadzirwa mhando dzakakamurwa kuva PVC-SG3, PVC-SG5, PVC-SG8.Different chigadzirwa mhando dzine kushandiswa kwakasiyana. Iyo chaiyo yemhando yekushandisa kupatsanurwa ndeye: SG-3 ndeyemafirimu, hosi, matehwe, waya waya uye zvimwe zvakajairika zvigadzirwa zvakapfava. SG-5 ndeye...
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