Profile：Configuration: ? 1. Taiwan STK speed motor control; ? 2. The docking station is 1000mm long; ? 3.35B imported high quality nylon chain transmission; ? 4. Special aluminum profile rails; ? 5. Special gear and trapezoidal screw synchronous widening structure; ? 9. Surface treatment: electrostatic spray computer white; ? 10. PCB width 50-300mm; ? 11. The front rails are fixed from left to right.