Matumba opaka pulasitiki amapangidwa ndi polypropylene (PP) monga zida zazikulu, zomwe zimatulutsidwa, zokoka zitsulo, zolukanso, zoluka, ndikupangidwa kukhala matumba onyamula.PP ndi mandala, theka-crystalline thermosetting pulasitiki ndi kulimba mkulu, zabwino kutchinjiriza katundu, otsika mayamwidwe madzi, mkulu am ...
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