Kutulutsa kwa pulasitiki, monga mbiri ya UPVC (yolimba polyvinyl chloride) kapena zinthu zapaipi, zimapangidwa makamaka kudzera pakusakaniza, kutulutsa, kupanga, kutulutsa, ndi kudula utomoni wa PVC ndi zina zowonjezera.Zinthu zomwe zimakhudza magwiridwe antchito azinthu zimaphatikiza ...
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