Sodium bulbs are one of the most efficient gas-discharge light sources, which gives a bright orange light. They are widely used for highways, street lighting, tunnels, stations, airports, industrial areas, everywhere, where you need to provide a contrast visibility of objects in all weather conditions. Sodium bulbs are widely used for lighting of greenhouses, they perfectly simulate sunlight and beneficially influence on plant growth. The benefits of sodium lamps are constant light stream and efficiency of lighting during all service life.