1. Is the accuracy stable or unstable, and will it deform after three to five years of use
(Core considerations: casting material, aging treatment, guide screw configuration)
2. Can heavy cutting and work be done quickly
(Core considerations: body rigidity, spindle power, servo configuration)
3. Is there any guarantee for after-sales service and is it easy to operate
(System simplification, complete machine warranty, on-site after-sales service, technical training)