[Selelekela] : Ka ho fihla ha tlhoko ea khale ea nako ea selemo, 'maraka oa PVC oa fokola, kaho ea kakaretso ea likhoebo tsa PVC Shandong e batla e le tlase, kaho ea likhoebo tsa ethylene e batla e tsitsitse, empa likhoebo tse ling tsa kantle tsa calcium carbide, tlasa litšenyehelo...
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