Realtek And Harvest Lighting is a professionalmanufacturer of electronic HID ballast for hydroponics,horticultural and street lighting. We manufacture 110-480Volt , 70-1000 Watt digital ballast. Our engineers have beendesiging ballast over 15 years and managering mass productionfor 8 years. With rich experience of designingand manufacturing, strict quality control system, skilled labors,and advanced equipments, high efficiency and more reliable ballastswill be made. Not stopping at HID ballast, RHlighting also has a production line to offer Carbon DioxideGenerator. Liquid propane and natural gas 4/8 burners which couldincrease CO2 level in your growing environment.