1. Z-axis column is made of super wear resistant aluminum alloy and treated specially to reduce the deformation. The precision linear guideway is equipped for higher accuracy and easily operation.

2. Both X-axis and Z-axis are equipped with rapid traverse equipment for higher moving efficiency.

3. High rigiduty steel plate without any internal stress is used for the base to reduce the deformation amount to minimum.

4. The X-axises of DH-4400R and DH-6600R are equipped with double linear guideway for stable, smooth and fast operation.

5. With 5 manufactory conceptions: Lighter, more convenient, more rigidity, more artistic and more economic.

6. Construction and functions patented.