Acrylic tumble ntauwd blocks raws li ib yam ntawm cov khoom ua si muaj tswv yim thiab ntau yam khoom ua si, tam sim no yeej qee qhov hauv kev ua lag luam thoob ntiaj teb, xws li cov neeg siv hauv tsev, cov tsev kawm ntawv, cov tuam txhab khoom plig, thiab lwm cov neeg siv khoom dav lees paub thiab nyiam.Yuav ua li cas...
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