Matumba apulasitiki amagawidwa m'magulu awiri, imodzi sipawiri, ina imakhala yophatikizana.Palibe zida zophatikizika zomwe zimagwiritsa ntchito HDPE, LDPE, OPP, CPP, filimu yocheperako, etc. HDPE ndi LDPE nthawi zambiri zimagwiritsidwa ntchito ngati matumba onyamula zovala, komanso amagwiritsidwa ntchito kwambiri m'matumba osavuta, matumba ogula, ha...
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