玻璃内壳有反射及聚光设计,发光效率高,光线集中,寿命长,光色好.(A reflex layer on the bulb inwall; light-focusing design; high luminous efficiency; long service life and good photochromism.)

适用于广场,车站,码头,工地投射照明,农业上作人工气候培育室光源.(Available for lighting at large areas like the square, station,wharf, construction site,etc; also available for light soure in artificial climate breeding.)