开槽效率慢，工作时间大大延长，1天可以完成的工程却偏偏要5天才能完成？Slotting efficiency is slow, the working time is greatly extended, 1 days can be completed, the project willbe 5 days to complete?
普通开槽方法需多次重复操作，无法一次成形状，操作繁琐，槽形混乱？Ordinary slotting method need to repeat the operation, can not be a shape, the operation is complicated, the groove of chaos?
使用普通开槽工具每次就像沙尘暴来了一样，长期在这种环境下工作严重危害身体健康，且严重加大后期卫生清理工作？The use of ordinary slotting tool every time like a sand storm, the long-term work in this environment seriously harmful to the health of the body, and a serious increase in the late health clean-up work?
普通设备易损坏，开槽环境限制高，死角不能开，太硬不能开，局限性大，且硬度高点墙壁就直接损坏设备？Common equipment is easy to damage, the slotting environment limit is high, the corner can not open, too hard can not open, limited,and the high hardness of the high wall directly damage the equipment?
普通开槽机市场混乱，产品质量没保证，没相关证书，对使用者直接造成身体威胁？Common slot machine market confusion, product quality is not guaranteed, no relevant certificate, the user directly to the physical threat?