Tustxuag kev paub meej thiab kev lim dej yog qhov tseem ceeb ntawm qee qhov chaw kho tsob ntoo. Cov fiberglass clarifiers thiab cov neeg tuaj yeem tsim yog tsim rau kev tshem tawm zoo dua ntawm cov khoom sib cuam tshuam hauv dej, dej khib nyiab thiab daim ntawv thov kev lag luam.
Qhov loj me: Mekas