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  • Polystyrene yog dab tsi

    Polystyrene yog dab tsi

    Polystyrene yog ib hom yas uas siv tau los ua ntau yam khoom siv.Raws li ib qho nyuaj, khoom yas, feem ntau yog siv rau hauv cov khoom uas xav tau kom meej meej, xws li cov ntim khoom noj thiab cov khoom siv kuaj.Thaum ua ke nrog ntau yam xim, additives lossis lwm yam yas ...
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