I. Zvimiro: 1. upvc pombi, inozivikanwawo sepolyvinyl chloride pombi yakaoma, u-pvc pombi, imhando yakasimba yekudzivirira ngura, asidhi, alkali munyu mafuta epakati erosion resistance, light weight, imwe mechanical simba, good hydraulic conditions. , kuisirwa kuri nyore, asi kuri nyore kuchembera, yakakwirira te...
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