GQ40/GQ50/GQ60 makina odulira rebar ndi zida zabwino zodulira.Itha kugwiritsidwa ntchito podula yachibadwa
carbon zitsulo ndodo, otentha adagulung'undisa bar, bala yopunduka, zitsulo lathyathyathya, lalikulu zitsulo ndi ngodya zitsulo pokonza makina ndi ntchito zomangamanga.