all kinds of electronic ballasts for sodium lamps and metal halide lamps with the lowest power consumption and best performance . All those products are the result after researching and testing again and again with the most famous lighting experts in china. Most of our products are widely used in the most important projects in China such as Shanghai Pudong Air Port, The Oriental TV Tower and NanPu bridge and so on. And also we are exporting to world wide such as USA, Europe and Japan and singapore, we have set up our names for good quality and best services. Welcome all kinds of cooperation to develope together. Tel/fax:0086-21-66166055 or 66162340