Zvishandiso zvepurasitiki dhiramu zvinonyanya kugadzirwa nepolyethylene, polyester nemamwe mapurasitiki, uye anonyanya kushandiswa kubata glacial acetic acid, tert butyl peroxide, petroleum zvinhu zvine njodzi, asidhi uye alkali corrosive zvinodhaka, etc. Iine hunhu hwakatanhamara, senge kwete. isina kusimba, isina ngura,...
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