Nws muaj ob hom kev ua haujlwm ntawm kev voj voog thiab kev ua haujlwm tas mus li raws li txoj haujlwm ua haujlwm.
Raws li cov txheej txheem nplawm, muaj ob yam ntawm tus kheej-tso tus kheej thiab yuam nplawm.
Muaj ob hom kev teeb tsa thiab txawb raws li ntaus ntawv.
Raws li cov txheej txheem paug tawm, muaj ob hom tilting thiab tsis tilting.
Raws li cov duab ntawm lub nruas sib xyaw, muaj tsib hom pear hom, nruas hom, ob chav lub puab, disc ntsug axis hom thiab round zawj kab rov tav axis hom. Thawj peb yog tus kheej-kev tso pov tseg; qhov tom kawg ob lub yog yuam kev ntxhov siab, uas yog siv tsawg dua hauv Suav teb.
Raws li kev sib xyaw muaj peev xwm, muaj ntau qhov loj (paug muaj peev xwm 1000 ~ 3000L), nruab nrab (tso tawm muaj peev xwm 300 ~ 500L) thiab me me (tso tawm muaj peev xwm 50 ~ 250L).
