UV lamps are often used for air purifier, water trement and surface dininfection. We have manufactured UV lamps more than 10 years in China and enjoy a good reputation with high quality, superior service and valuable price in our customers. Advantage of our UV lamps 300W: 1. 60000hrs lifespan, 2. Water-proof, which can work in a humid room; 3. The UVC intensity is 1300uw/cm2 in 1m; 4. 3 years warranty; 5. Working temperature: -20-100 About the price(EXW), subject to negotiation.