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SBS yog dab tsi
SBS (styrene-butadiene-styrene) Poly (styrene-butadiene-styrene) los yog SBS, yog cov roj hmab tawv uas siv los hloov asphalt, los ua cov khau khau, lub log tsheb, thiab lwm qhov chaw uas muaj kev ruaj ntseg tseem ceeb.Nws yog hom copolymer hu ...Nyeem ntxiv
