... ctn Features --- surface mounted led ceiling light 1) We use high quality SMD LED as light source, which is high brightness, long ... voltage, short-circuit, and overload risks9) No Mercury Inside, No UV, No IR, good for your health10) Flicker-Free Lighting: ... CE, RoHS and PSE certifications Application --- surface mounted led ceiling light Widely used in family, school, office, showing room, meeting ...