High Pressure Sodium Lamp:1)work without additional ignitor 2)High lumence, long life time, good fog-penetrating capability High Pressure Sodium Lamp:1) Work without additional ignitor.2) Watts: 50W, 70W, 110W, 150W, 250W, 400W available3) Long service life time, High luminous efficiency, white-golden ray that penetrates fog at ease.4) Base: E27, E405) Application: Available for indoor and ...