... technology to inspect and calculate the actual needed energy, and finally to control the power output as ... can save electricity 15%-35%. The sewing machine energy saver's characteristics:1. Adopt the low-speed ... to reach 20 years, guarantee for one years8. It can be applied to industrial sewing machines, cutters, ... , handbag, luggage, shoes, hats and toys. It can also be used for some special equipments