high pressure sodium lamp:High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of ligh high pressure sodium lamp Characteristic,High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of light...

Sodium Lamp:High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of light Sodium Lamp Characteristic,High in luminous efficiency，less in power consumption,long in service life,white-golden in ray of light and strong in...

sodium bulb:High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of ligh sodium bulb Characteristic,High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of light and strong in fogpenetrating...

sodium bulb:High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of ligh sodium bulb Characteristic,High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of light and strong in fogpenetrating...

sodium bulb:High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of ligh sodium bulb Characteristic,High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of light and strong in fogpenetrating...

Sodium Lamp:High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of light Sodium Lamp Characteristic,High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of light and strong in fogpenetrating...

high pressure sodium lamp:High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of ligh high pressure sodium lamp Characteristic,High in luminous efficiency,less in power consumption,long in service life,white-golden in ray of light...