Mapaipi a polyethylene (PE) ndi mwala wapangodya wa zomangamanga zamakono, zomwe zimagwiritsidwa ntchito popereka madzi, kugawa gasi, ndi ulimi wothirira. Pakatikati pakupanga mapaipi olimba awa pali mzere wa PE wotulutsa chitoliro, njira yotsogola yomwe imasintha zinthu za polyethylene kukhala zapamwamba ...
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