... hall, art room, museum, office, reading room and local lighting. 3.Atmosphere lighting for bars, discos, karaoke, etc. 4.durability special ... superior efficiencies of: 1. Less power consumption. 2. Less Greenhouse gas emissions. 3. Less maintenance. 4. Improved illumination. 5. Less over-all ... Avoid increasing the electricity bill 7. Environment friendly: T5 uses 3 mg mercury, T8 uses 9 – 12 mg mercury