Founded in 1994, Powerwill is recognized as one of the largest manufacturer switching power supply China.We are a founder and board member SMPS association enjoy reputation for our sincerity business. Our products range from 5W to 5000W which widely used ...

Established in 1988,has over 15 years experiences switching power supply. Donghua provides you q wide of high quality AC-DC supplies and professional product solution.To supply our customers perfect products, we set up R&D department with 20 experienced ...