LED Bulb noise: LED lamp should be able to guarantee under nominal operating conditions 30w bulb, steady work, the noise power is not greater than 45dB (A). LED bulb life: LED lamp rated life of not less than 25 000 h. LED bulb heat: heat dissipation LED bulb should be able to guarantee under nominal operating conditions, when stable 30w bulb brand, symmetrical center position LED junction temperature does not exceed 70 ℃. led energy saving light features: green: no mercury and xenon and other harmful elements, conducive to recovery, ordinary lamp contains mercury and lead elements. Safety factor: the required voltage, current is small, a small security risk, in mines and other dangerous places. Market potential: Low-voltage DC power supply, battery, solar power, in remote mountainous areas and outdoor lighting such as the lack of electricity, less electricity places. Protect eyesight: DC drive, no strobe (normal lights are AC drive, will inevitably produce strobe). 30w bulb price _ Hang Li saving (certified) _ Hebei 30w bulb provided by Anyang Hi-tech Zone Heng Lai energy-saving lamp factory. High-tech Zone Anyang Heng Lai energy-saving lamps factory (www.ayhljnd.com) is Anyang, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hang Li leadership in energy efficiency with the staff warmly welcome all inquiries negotiations to create a constant Korea saving a better future.