1. High effective energy saving 2. High luminous effciency 3. Long lifetime, low maintenance cost 4. OEM service offered application:street,square,parking lot,station,factory and so on.feature:1,150w,250w,400w2,220v3,starting current:5A4,working current:3A5,28000lm6,Color temperature:2000k7,CRI: 258,starting time: less than 5 seconds9,diameter:49mm;length:259mm; high pressure sodium lamp