Shenzhen Rongzhifa Electronic Co., Ltd. is specialized in the electronic industry, established in August 1998. We are one of the leading manufactures specializing in designing, manufacturing, and selling all kinds of electric fans, Computer peripheral USB device, low-frequency transformer. Developed from a small factory, nowadays we own 3 main production lines covering a total series of fans, Computer peripheral USB devices, and low-frequency transformers. We have over 200 staff. With ...