Cov pob iav yog haum rau ntau qhov chaw ib puag ncig, feem ntau yog suav nrog cov hauv qab no:
Tshuaj Kev Lag Luam: Cov iav iav ua tau zoo hauv kev lag luam tshuaj thiab muaj peev xwm wrowic acids, muaj zog alkalis, siab ntau ntawm cov ntsev thiab cov kuab tshuaj los ntawm cov organic. Yog li ntawd, lawv feem ntau siv los khaws thiab thauj cov tshuaj lom xws li hydrochloric acid, nitrice acid, nidhanol, hydrogen peroxide, dej phwj thiab sodium hypochlorite.
Roj av thiab kev lag luam fais fab: Hauv cov lag luam no, cov iav tso kua hlau, xws li tso tsheb hlau luam hauv av thiab thauj khoom tank tsheb thauj khoom.
Cov khoom noj khoom haus kev lag luam: Cov thawv ntim khoom noj yog feem ntau siv rau khoom noj cia thiab tsheb thauj mus los vim tias lawv cov yam ntxwv zoo thiab tsis yog kev sib tw zoo. Piv txwv li, cov khoom ntim iav xws li khoob fermented taum curd, Lao Gan Ma, thiab SoyBean muab tshuaj pleev li cas rau khaws cia lard, bagged kua thiab qhuav.
Kho kom zoo nkauj hauv tsev: xws li siv rau kev kho kom zoo nkauj, cov kua mem pleev duab, khoom noj khoom haus, chav ua noj khoom haus, thiab lwm yam khoom noj txom ncauj, thiab lwm yam.