1. Ua raws li cov lus qhia txog cov khoom hnyav rov qab los yog kev cob qhia kev ua haujlwm;
2. Ntxuav hauv qab ntawm lub lauj kaub thaum ntxiv cov kuab tshuaj, los yog ntxuav nws ib hnub ib zaug; Thaum hloov cov kuab tshuaj, nws yuav tsum tau muab ntxuav kom huv, thiaj li tsis cuam tshuam cov nyhuv ntxuav tom qab cov tshuaj tiv thaiv ntawm cov kuab tshuaj, thiab tuaj yeem ua rau cov txheej txheem cua sov txuas ntxiv;
3. Thov tua lub tshuab hluav taws xob thaum lub tshuab tsis ua haujlwm, thiab tua hluav taws xob yog tias lub tshuab nqus tsev tau nruab;
4. Khaws lub cev ntawm cov khoom hnyav rov qab kom huv si thiab qhov chaw huv si, thiab khaws qhov chaw rau tuav cov kuab tshuaj ventilated.
Kuanbao ib puag ncig tiv thaiv cov cuab yeej muaj hnyav rov qab tshuab, roj thiab dej cais, roj centrifugal nqus tsev twj, lub tshuab nqus tsev twj thiab lwm yam. Qhov loj ntawm cov kuab tshuaj pov tseg uas tsim nyob rau hauv ib hnub tuaj yeem siv tau zoo rau cov kuab tshuaj organic siv cov nroj tsuag. Txhawm rau pab koj daws ntau yam teeb meem tshwm sim los ntawm cov tshuaj lom ntawm cov kuab tshuaj pov tseg, ua rau tawg thiab tawg, thiab lub sijhawm ntev stacking thiab nyob hauv qhov chaw, txuag lub xaib thiab tshem tawm kev nyab xeeb.
