Double Good Co. (DGC) has focused on top quality Tungsten Lamps and LED products for over 20 years in China. We started as a small operation, but now have become one of the leading suppliers in the Lamps industry in China. Today, Double Good Co. (DGC) has been one of the top producers of quality Tungsten Lamps and LED products, such as: Oven Lamps, LED Filament Lamps, LED Decorative Lamps and LED Christmas Lamps.