Half Spiral 15W,20W,26W 1.Certificate:ISO9001.ROHS.CE.GS.EMC.CCC 2.Technology:Advanced equipment and Self-development team Hangzhou Liangliang Electronic Lighting Co.,Ltd Company Profile Related Products SpecificationCertificate: CE,GS,Rohs,CB,SASO Certificate can be provided.renderingLife: 8000hours with EMC and PTC Testing: 3000 times for on and off testing, Aging test, Twisting force testing, ...