Kev npaj vuam feem ntau yog txhawm rau tshawb xyuas seb puas mob ntawm lub tshuab vuam ua tau raws li cov cai ua haujlwm. Piv txwv, tshawb xyuas seb cov freakeners ntawm ntau qhov ntawm lub tshuab xoob xoob lossis xoob; Kuaj seb cov hluav taws xob hluav taws xob txuas ntawm tag nrho lub tshuab yog qhov tseeb thiab txhim khu kev qha; Txheeb xyuas cov roj hydraulic hauv lub tank hydraulic yog qhov txaus; Paub meej tias lub hwj huam muab yuam kev cov tshuab kev xav tau; Seb cov phaj cua kub sib ntsib qhov yuav tsum tau ua (txawm hais tias cov txheej tawv puas lawm); Kev sim ua haujlwm ntawm milling cutters thiab roj twj tso kua rau, thiab lwm yam.
Tom qab ntawd muab cov ntawv swb ntawm cov roj sib tshooj sib xws rau hauv cov khib; Teem lub cua sov phaj kub rau lub tshuab kub (qhov kub vuam kub (siv cov ntaub softy, siv cov ntaub softy, tab sis ceev faj kom tsis txhob khawb lub ptfe anti- adhesive txheej.