... for summer was,mattress.comforter 2.certificate:CE,ISO9001:2000. 3.design software,servo motor Haimen Hengxin Machinery Co.,Ltd.Performance ... control program.2. Saddles and rollers driven by servo devices.3.The revolution of the spindle controlles by frequency conversion control ... results and little risk,it will be your best choice.3. Its thread mark is even,solid.4. Abour 50 designs ...