... 3. Long lifespan. 4. Led Bulb 5W, Led Light Bulbs, Commercial light bulb A. Description of Led Bulb 5W, Led Light ... Bulbs, Commercial light bulb1. Adopt eco-friendly aluminum alloy as heat sink ... rooms, shopping malls, exhibition halls, supermarkets, hotels, restaurants and other lighting places. C. Led bubl lamp series: D. As a professional ...