1. Nws yog txwv tsis pub muab cov khoom tawg yooj yim thiab tawg rau ntawm qhov chaw ntawm cov khoom siv kho qhov muag vuam cov menyuam thav duab. Qhov kub ntawm lub caij ntuj sov yuav cuam tshuam rau cov khoom siv;
2. Thaum siv cov menyuam sawv ntsug, ceev faj kom tsis txhob overload nws. Qhov zoo dua lub peev xwm thauj khoom, qhov ntau nws tuaj yeem ua rau muaj kev puas tsuaj;
3. Tsis txhob muab cov khib nyiab rau ntawm qhov hloov kho vuam cov menyuam thav duab kom tiv thaiv lub cev tsis muaj zog thaum nws khiav;
4. Tsis tu ncua xyuas thiab tswj cov menyuam thav duab ntawm lub tshuab vuam kom pom tias lub tshuab lubricating puas txaus los tiv thaiv kev sib txhuam, thiab lwm yam.
5. Qhov kub thiab txias nyob rau hauv lub caij ntuj sov, thiab cov sticks rau welding lub yob thav duab yog polyurethane log, yog li lub yob ncej yuav tsum tau khaws cia tsis tu ncua. Yog tias muaj qhov sib txawv, nws yuav tsum tau kho los ntawm tus kws tshaj lij kom tsis txhob cuam tshuam cov txheej txheem vuam;