xxxxx Hangzhou Galaxy, the fastest growing high intensity discharge lighting company in China, is dedicated to developing energy-saving solutions and new concepts for HID lighting applications. Combining the talents and experience of power electronics and embedded-microprocessor engineers with deep understanding of HID lamp technology, Hangzhou Galaxy offers a wide range of electronic ballasts for HID lamps: Metal Halide and High Pressure Sodium (HPS), in power ratings from 100 to 600 Watts. Driven by a commitment to excellence, Hangzhou Galaxy strives for the most innovative technology for standard and customer-designed solutions. Hangzhou galaxy offers you all these benefits SIGNIFICANTLY INCREASED LUMEN MAINTENANCE VASTLY IMPROVED LAMP LIFE ,SUPERIOR LIGHT QUALITY ,EXCEPTIONAL ENERGY SAVINGS , DIMMING ,DAYLIGHT HARVESTING , ECONOMY MODE ,HIGH EFFICIENCY , SOFTSTART , NO START UP CURRENT ,CONTROLLABILITY ,SIMPLE INSTALLATION WITH REDUCED COSTS , REDUCED MAINTENANCE , BUILT-IN DIAGNOSTICS , HIGH RELIABILITY