Sodium lamp is a high-intensity gas discharge lamp that uses sodium vapor discharge to emit light. It is divided into two categories according to the working vapor pressure: low-pressure sodium lamp (LPS) and high-pressure sodium lamp (HPS). It has the characteristics of high efficiency, long service life, and strong fog permeability, and is widely used in roads, airports, docks, squares, industrial and mining enterprises, and plant lighting. Typical applications: urban main roads, highways, bridges, tunnels; High pole lighting for docks, aprons, and freight yards; Workshop, yard, drilling platform; Greenhouse lighting, seedling cultivation, and flower stimulation; Sports venues, exhibition halls, parking lots, squares and other public places.