... 2)lower price &no radiation 3)lower brightness degredation high lumen 3w/5w/7w/11w fish ceiling light Light sourceSMD3528Luminous Flux80~90lm/wCCT2800 ... ,banks,chain stores,airports,supermarkets,indoor decorations,exhibition,showrooms ,etc high lumen 3w/5w/7w/11w fish ceiling light