1. Txheeb xyuas cov txheej txheem ntawm cov khoom raws li nws cov khoom siv, zoo li, precision, thiab lwm yam specifications, thiab txiav txim siab cov txheej txheem ntws.
2. Txiav txim siab qhov khoom tso rau hauv cov pwm kab noj hniav, thiab txheeb xyuas thiab tsim cov kab sib faib, cov kab ntau dhau, thiab cov kab sib txuas.
3. Tsim cov kev sib dhos thiab kho cov txheej txheem rau txhua qhov txav mus.
4. Tsim cov tub ntxhais - rub nrug thiab quab yuam.
5. Tsim lub ejection mechanism.
6. Txiav txim qhov tuag-casting tshuab thiab tsim cov pwm ncej thiab cua txias system.
7. Txheeb xyuas qhov ntev ntawm cov pwm thiab tuag- tshuab casting, thiab kos cov txheej txheem kos duab rau pwm thiab nws cov khoom.
8. Tsim tiav.
