high pressure sodium lamp Specifications: 1) NG150, NG250, NG400 2) Average life: 10,000h high pressure sodium lamp Specifications: 1) NG150, NG250, NG400 2) Average life: 10,000h Features: 1) Compact size 2) High efficiency 3) Long using life 4) High maintained light output 5) Used for road lighting, amenity areas, car parks, area floodlighting, warehousing, industrial units 6) Twin burners