We have the rich experience Research & Development group and exquisite technology to custom-made a suitable product for customers. Using best spare parts with specialized production high grade quality produce all goods is our management concept. The goal ...

Risun Expanse Corp., as a professional R&D and integration of machinery, electromagnetic, electronics into three main areas DC Brushless Motor technology company, not only has successfully innovated domestic first high-performance voice Coil Vibration ...