Power:8W, 14W,21W,28W,35W Certificate: CE,CCC,ISO ... ,low light decay, long lifespan,flicker-free etc.3>High power electronic ballast, meeting the nations's "Green Lumination" request. ... has gained wide popularity among clients. it's widely used in supermarket, office ,hospital, home, ect.Parameter Table of Energy ... 38080-89G51449*Φ16 Parameter table of energy saving 2011 T5 Fluorescent Lamp Fixture