Gpusi is one of the ballast leading manufacturers in China, which is dedicated in researching, developing, producing and selling HID ballasts and bulbs. We produce all types of ballast and igniters, specially the digital type slim ballast, at the same time, we supply the high performance HID lamps. For the years of hard working and experience accumulating, we achieve the high reputation in HID xenon lighting system. Besides the unique authorized distributor of Philips in China we were,we also the role of manufacturer of XENON HID ballast as well as the cooperation with Taichang bulbs company. &Including TC bulb,TC Philips Bulb, Philips light source bulb.& Our products are passed the E-mark, RoHS, CE approval, and certified by ISO9001 quality standard. We are warmly welcome you to browse our website: www.gpusi.com for more information. We would be appreciated if you inform us your requirement. Your satisfaction is our pursuit .