Shenzhen Yongyihao Electronic Co.,Ltd. established in 2001 ,we are professional in researching and developing DC/EC fans.Our factory has a strong research and development team above 50 people, Excellent quality control department,many experiment test equipments .we achieved series regulatory approvals,such as CE,ROHS,UL,TUV,CUL,TS16949,ISO9001 and so on .Our factory could produce 1.5 million fans per year. We supply fans for Delta,GREE, Lenovo ,BYD and many other famous company with high quality and competitive price.In the future, our company will be committed to automatic product, products research and development, quality control and the best after-sales service.Hope w could have a long and stable cooperation .