Changsha Xinglian Electric Power AutomationTechnology Co.,Ltd was established in 2006,which is China honest directly factory of HID electronic ballast, and intelligent lighting control system. Our HPS/MH electronic ballast normally have 70w,100w,150w,250w,400w,600w,1000w,which cover the applications of public lighting, grow lighting and fishing lighting.(like commercial lighting /road lighting / plant lighting/ stadium lighting /tunnel lighting /industrial lighting and other public lighting. Wide voltage / knob dimming / PWM dimming / 1-10V dimming / can be customized. OEM and ODM are both available. To satisfy your requirement is our purpose.