Polyisobutylene (PIB) yog cov xim tsis muaj xim, tsis muaj ntxhiab, tsis muaj tshuaj lom neeg tuab lossis cov khoom siv semi-tshuaj, kub tsis kam, oxygen tsis kam, ozone tsis kam, huab cua tsis kam, ultraviolet tsis kam, acid thiab alkali tsis kam thiab lwm yam tshuaj ua haujlwm zoo.Polyisobutylene yog xim tsis muaj ntxhiab, tsis muaj ntxhiab, tsis muaj ...
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