1. Kub: 0-40 degree, txheeb ze humidity:<70%;
2. Qhov siab: Tsis tshaj 2500 meters;
3. Tsis txhob raug los nag, dej noo, kub kub, kub kub, lossis tshav ntuj ncaj qha. Qhov qhib qhov cua yuav tsum yog tsawg kawg 40cm deb ntawm cov khoom nyob ib puag ncig;
4. Tiv thaiv kev ua haujlwm hauv ib puag ncig nrog cov kua dej corrosive, gases, plua plav, conductive fibers, lossis hlau shavings;
5. Tiv thaiv kev ua haujlwm hauv ib puag ncig nrog kev vibration lossis electromagnetic cuam tshuam;
6. Zam kev ntev - lub sij hawm hloov chaw khaws cia thiab kev thauj mus los, thiab zam kev cuam tshuam loj.
