1. Power-saving stable electric current and fine cutting trace. 2. Spindle speed is controlled by a rotary switch, this shortens the time for shifting...
1. Power-saving stable electric current and fine cutting trace. 2. Spindle speed is controlled by a rotary switch, this shortens the time for shifting...
1. Power-saving stable electric current and fine cutting trace. 2. Spindle speed is controlled by a rotary switch, this shortens the time for shifting...