Strictly according to ISO9001: 2000 international quality management system standards.3 years warranty for the products . Rated Voltage220VLight source(MH gas discharge light ) 70w light luminous Average life 5500lm10000h100w light luminous Average life 9000lm10000h150w light luminousAverage life13000lm10000hHPS gas discharge light :70W Light luminous flux:Average life 6000lm28500hSIZE:300 *300 * ...