Ballast Series 1.Certificate:ISO9001.ROHS.CE.GS.EMC.CCC 2.Technology:Advanced equipment and Self-development team Hangzhou Liangliang Electronic Lighting Co ... hours and 10,000 hours also provided).3. Saves >80% power more than common incandescent lamp.4. Strong lighting, warm and ... , workshop, lobby, meeting hall, hotel, etc.7. One year guarantee. electronic ballast