Ang Polyisobutylene (PIB) usa ka walay kolor, walay lami, dili makahilo nga baga o semi-solid substance, heat resistance, oxygen resistance, ozone resistance, weather resistance, ultraviolet resistance, acid ug alkali resistance ug uban pang kemikal nga maayong performance.Ang polyisobutylene usa ka walay kolor, walay baho, walay...
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