The VMC-168 bed, spindle box, and other key components are all made of Mihanna (dense baking) castings. The material grade of the casting is FC-30. The casting structure adopts integrated molding technology, box structure, and the machine tool has high rigidity, high strength, and excellent geometric positioning accuracy. And it can ensure the long-term stability and high precision of the machine tool. 2. Unique tool changing mechanism, which uses special materials, undergoes precision machining, and unique heat treatment to make tool changing fast, reliable, accurate (without impact on the spindle), and smooth without noise. 3. The spindle loosening tool is driven by a unique and stable hydraulic pressure, which has higher tool replacement reliability than a simple pneumatic loosening tool. It also adopts a floating retraction design to ensure the rigidity and service life of the spindle. 4. The large capacity tool magazine mechanism can store 24 knives and adopts the latest cam type tool changing system. The tool magazine management adopts a random memory type, making tool exchange quick, safe and reliable. Optional