Shenzhen TDL Science & Technology Co., Ltd is a manufacturer specialized in HID ballast. We started to produce HID ballast from 2005, now is became one of the best HID ballast manufacturer in China. Our factory is located in Bao???n District of Shenzhen City, totally covering an area of 3, 000 square meters and with nearly 100 employees, equipped with the most advanced testing and aging equipment, produce around 500,000pcs ballasts every year. We have a professional R&D team, which is experienced in OEM for international brands. Our company have passed the ISO9001: 2000 Certification In 2008 , and in 2009, our TDL HID ballasts have approved by the CE certification.