1EdgeLight Electronic Ballast 2.certificates as CCC,UL,CE,PSE,SAA,VDE.etc. 3.voltage :100v-240v 4,specification:1*21w EdgeLight Electronic Ballast As a professional lighting company, we are concentrating on developing advanced lighting products and investing more and more energy to improve electronic ballast to match modern lamp. In these years, our products have been exported to North America, ...