as a leading in ballast of watt-change road lighting power-saving system company, build at 1998.start R&D in this field over 10 years;our R&D team is leading by dr.du, as he is the nation high-tech department very famous ***** factory is near shanghai.workers total over120;capasity 30000 pcs/per ***** products are sales inbund and ***** to eu.south africa and southeast asia.we can provide total solution for your city street light with the powerful energy saving system.we have got the national innovation gold prize and ce/fcc/rosh approval.we supply what you and your city and our earth need.