Polypropylene (PP) ndi crystalline thermoplastic yolimba yomwe imagwiritsidwa ntchito pazinthu zatsiku ndi tsiku.Pali mitundu yosiyanasiyana ya PP yomwe ilipo: homopolymer, copolymer, impact, ndi zina zotero. Kapangidwe kake, thupi, ndi mankhwala amagwira ntchito bwino muzogwiritsira ntchito kuyambira zamagalimoto ndi zamankhwala ...
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