... Pearl Cotton,and PE bag. 4.Applications- led downlight ceiling lamp 1. Factories, Hospital Lighting2. Warehouse, Supermarket Lighting3. Schools ... To UseQuickly start, no UV, IR, radiation and no flickering, eye protection.(4) Long Life TimeMore than 10 years ... Low power consumptionGood function of heat dissipation ,improving the lamp's lifetime.(7) Unique DesignSpecial circuit design, each group ...