Features: 1) Super luminous efficacy, super long life 2) The latest technology, super luminous efficacy 10% higher than standard high 3) Pressure sodium lamps 4) Longer life (rated average life) 32000hours 5) A direct substitute of standard huge pressure sodium lamps 6) More excellent consistency, less frequency of relamping and less cost of lamps maintenance 7) Excellent fog penetrating capacity 8) Effective to relax drivers\'\' eyestrain, helpful for traffic safety 9) Applications: roads, stations, airfields, wharfs, freight, transport stations, areas requesting strong fog penetrating capacity 10) Helpful to plants growing, horticulture and hydroponics industries