1. Tsis txhob sawv ntawm lub cuab tam lossis tub rau khoom kom tsis txhob muaj kev huam yuaj;
2. Qhov hnyav ntawm qhov khoom yuav tsum tsis txhob tshaj qhov hnyav tshaj plaws ntawm lub tub rau khoom;
3. Thov muab hnab looj tes thaum siv cov cuab yeej kom tsis txhob raug khawb los ntawm cov khoom ntse lossis ntxhib;
4. Thaum xaiv lub cuab yeej, koj yuav tsum xaiv lub cuab yeej muab ntawv pov thawj.
5.
6. Hlau Tool Box, saum npoo yog feem ntau pleev xim rau lossis galvanized, thiab lwm yam.
7. Thaum khaws cov khoom, tso rau lawv txhawm rau kom lawv qhov chaw cia khoom.