Sodium Bulbs 400W 250W E40 E39 for Street Lighting

Sodium Bulbs 400W 250W E40 E39 for Street Lighting. Superior Luminous Efficacy: Exceeds 150Lm/w with tested 600w HPS lamp performance. Enhanced Fog Penetration: Golden-yellow to golden-white light improves visibility in fog, mist, and dust. Robust Environmental Tolerance: Endures temperature shifts and vibrations in both hot and cold climates. Voltage Fluctuation Adaptability: Superior grid adaptability using traditional silicon steel sheets and coil windings. Durable Quartz Glass Construction: Premium sodium arc tube encased in resilient quartz glass from a renowned provider. Lead-Free Nickel-Brass Base: E39/E40 type base made of lead-free nickel-brass for safety and durability. Long Average Lifespan: Up to 23,000 hours average life across various wattage models. Flexible Customization Options: Offers full, minor, and sample/design-based customization including logo printing.