Malinga ndi PCB bolodi kulimbitsa zipangizo, izo zambiri anawagawa mu mitundu iyi: 1. Phenolic PCB pepala gawo lapansi Chifukwa mtundu uwu wa bolodi PCB wapangidwa pepala zamkati, matabwa zamkati, etc., nthawi zina amakhala makatoni, V0 bolodi, lawi- bolodi retardant ndi 94HB, etc. Mnzake wamkulu ...
Werengani zambiri