... ,Pearl Cotton,and PE bag. 4.Applications- led downlight ceiling lamp 1. Factories, Hospital Lighting2. Warehouse, Supermarket Lighting3. Schools, ... and harmful materials.(3) Comfortable To UseQuickly start, no UV, IR, radiation and no flickering, eye protection.(4) ... avoiding any problem of lighting output caused or influenced by single faulty LED. (8) Beautiful SurfaceUltra-thin design conception, ...