1.use in bedroom,office,factory,hotel,hospital,school,show room,ect. 2.delivery time:15 days ... . Instead of the indoors ceiling light 2. School/Universities/Hospital/Hotel 3. Conference/Meeting room,Show Room 4. Commercial Complexes 5 ... lamp,Self Ballasted Energy Saving Lamp, Corrosion Resistant Fluorescent Lamp,small power led light,led light,light,led power lights 220v