HUNAN INTELLIGON SYSTEMS LTD is a high-tech corporation which is located in Changsha National High-tech Industrial Development Zone. And our company is specialized in researching, developing, producing and selling electronic energy-saving lighting products. Chairman Mingfu Gong is a well known EDA and Lighting expert in American Silicon Valley. The company has an out-standing R & D team and a full-featured OEM production base.The XLDS series of electronic High-Intensity-Discharge(HID) ballast(for High-pressure Sodium lamp, Metal Halide lamp and High-pressure Mercury-Vapor lamp) has a series of advantages such as high light efficiency, stable performance, low in cost, light in weight, digital dimmable and its comprehensive energy efficiency up to 40% etc. Our products had allready been widely used in public lightings such as urban road, highway tunnels, businesses, factories and agricultural greenhouses. It is definitely the global replacement of green public lighting products.There are two types of the power supply of the XLDS series electronic HID ballast, 90V150V and 170V270V, and the frequency is 50/60 HZ, which can cover different lighting standards all over the world.By virtue of the superior technological advantages, the powerful marketing network and the Attentive after-sales services, we will spare no effort to serve every customer all-around.