China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

High-pressure Sodium lamp emitting principle is the use of sodium vapor generated by the discharge, sodium lamp radiation wavelength of the light focused on the more sensitive range of human visual sensation, the advantages of the sodium lamp is light efficiency than Metal Halide, and through fog and strong, usually square and the main traffic road lighting source is sodium lamps. Sodium lamps of the disadvantage is the poor color rendering properties. The advantages of metal halide light efficiency, long life and high pressure sodium lamp short, and prices tend to you. The advantage is that the color is good, usually used in factories, exhibition hall, auditorium lights indoor places. The difference between metal halide lamp and high pressure sodium lamp mainly in terms of life expectancy, the price, the color, metal halide or sodium lamp should be selected according to the actual situation.