EN
Kev pab tshwj xeeb rau kev xaiv kom raug
Ib pab neeg tsim los ntawm cov kws tshaj lij muaj peev xwm los pab cov neeg siv khoom xaiv cov khoom tsim nyog tshaj Polyvinyl cawv. Raws li kev paub dav dav peb muaj, peb kuj muab cov kev daws teeb meem tsim nyog rau cov kev xav tau thiab kev siv ntawm cov neeg siv khoom.