Nyenzo za kebo za PVC ni resin inayotokana na kloridi ya polyvinyl, na kuongeza kiimarishaji, dioctyl phthalate, diisodecyl phthalate, dioctyl terephthalate, trioctyl metaphenolate na plasticizers nyingine, kalsiamu carbonate na vichujio vingine vya isokaboni, viungio na vilainishi, baada ya kuchanganya na kukanda na extru...
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