Polyisobutylene (PIB) is a colorless, tasteless, non-chepfu gobvu kana semi-solid substance, heat resistance, oxygen resistance, ozone resistance, weather resistance, ultraviolet resistance, acid and alkali resistance uye mamwe makemikari anoita zvakanaka.Polyisobutylene haina ruvara, haina kunhuwa, kwete ...
Verenga zvimwe