Yog tias koj tab tom yuav khoom rau lub xov tooj smartphone, koj cov khoom xaiv feem ntau yog silicone, polycarbonate, tawv yas, thiab thermoplastic polyurethane (TPU).Yog tias koj xav paub tias TPU yog dab tsi, peb yuav rhuav tshem nws (pom zoo).Dab tsi yog thermoplastic?Raws li koj tej zaum paub, plas...
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