Polyvinyl Chloride (PVC) Ma board a thovu, opangidwa pogwiritsa ntchito zinthu za Petroleum, resin, ndi mankhwala osakhazikika omwe amagwiritsidwa ntchito kwambiri ngati m'malo mwa mapepala amatabwa kupanga zitseko, mipando, matabwa otsatsa akunja, mashelefu, kutchulapo ochepa.Zina mwazomwe zimagwiritsidwa ntchito kwambiri ndi PVC ...
Werengani zambiri