Nruab nrog pre-txiav, txuag cov ntaub ntawv, qhov ntev ntawm cov khoom tiav yog zoo ib yam, thiab cov precision yog siab. Pre-punching yog pwm xuas nrig ntaus, thiab txoj hauj lwm xuas nrig yog raug. Cov khib nyiab tawg yuav swb rau hauv qhov ntawm ob sab kom yooj yim rov ua dua.
Lub thawv iav yog txuam nrog universal sib koom ua ke kis tau tus mob, uas muaj lub zog muaj zog, hnyav bearing, ceev ceev thiab ruaj khov dua.
Ob lub motors raug faib rau ob sab, yog li lub zog sib npaug thiab lub tshuab poob yog me me.