Chitoliro cha PVC vs mapaipi a PPR

Kusiyana kwa Raw Materials PPR mapaipi amapangidwa kuchokera ku copolymer polypropylene, pamene mapaipi a PVC amagwiritsa ntchito polyvinyl chloride. Kusiyanitsa pakati pa zida ziwirizi kumabweretsa magwiridwe antchito komanso mawonekedwe. Mwachitsanzo,…