Kwamitin da'ira na PCB kullum yana canzawa tare da ci gaban fasahar tsari, amma bisa ga ka'ida, cikakken PCB yana buƙatar buga allon kewayawa, sannan a yanke allon da'ira, sarrafa lamintin tagulla, canja wurin allon kewayawa, Lalata. hakowa, pretreatment, a...
Kara karantawa