LED bulb Appearance: Fixed lamp and housing should be firmly 9w bulb, when applying torque required by ordinary light bulbs, lamp not loose. Phenomenon has not allowed a direct electrical connection between the cap and the housing. LED Bulb Safety: Bulbs rated at a nominal supply voltage and rated frequency should be long-term, reliable work properly, and the user and does not harm the environment. LED lamps part: LED chip is important: good 9w bulb LED chip price, high luminous efficiency, low temperature 9w bulb brand, high CRI, high junction temperature, anti-static. Cooling is important: if only emphasizes LED cold light source, no heat 9w bulb factory, that is completely wrong, before yet to develop a truly low heat LED chips, LED without quality radiator, so it's life may also nowhere near the existing ordinary energy-saving lamps! Because the light fades to 70% of initial lumen output, it has to identify the end of the LED energy saving lamp life. 9w bulb brand, Hang Li saving (certified), Shandong 9w 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.