2023-04-10
PVC yog hloov tau, lub teeb, raug nqi, pob tshab, tawv thiab nyab xeeb. Nws muaj cov khoom organoleptic zoo heev (tsis cuam tshuam qhov saj ntawm cov zaub mov ntim), thiab yuav tsum tau siv roj tsawg los tsim thiab thauj thaum piv nrog lwm cov khoom ntim xws li hlau lossis iav.