Shenzhen YingXin Optical Development Co., Ltd is a high-tech company focusing on switching power supply, including R&D, manufacturing , sales and service, providing professional SMPS design service and high-tech SMPS products. R&D and marketing office locates in Shenzhen, China.Besides, we have another company with name of WINTEK ELECTRONICS TECHNOLOGY LIMITED locates in HongKong . More than 20 engineers are from R&D department, of which nearly 45 percent have bachelor’s and master&＃039;s degree. We are intent on making the necessary investments in people and technology to maintain our technical leading position and to provide products of the highest quality that meet our customer needs. Wintek mainly provides high efficient power conversion solutions to the LED drivers, desktop power, and SMPS in industrial control industries. Whether the requirement is for a custom or standard power supply, for power of 1 watt or 2 50 watts, Wintek has the capability to meet your needs. We are able to offer you the most technologically advanced product line by utilizing our strong R&D and marketing resources. OEM and ODM service is welcomed.