... Without hydrargyrum or other harmful materials listed in RoHS;7). color vision: color temperature can be adjusted from 2500K ... housing), inside surface plated by half putamen and anti-static,2. Green and Environmental Protection: No lead, no mercury, ... , etc.Applications:1.use( living room, bedroom, kitchen, washroom )2. School, University, Hospital, Hotel3. Conference, Meeting room, Show room ...