1,Blended -light mercury lamp Characteristic: Good in photochromism, needless to use additional ballast and used as a substitute for incandescent bulb. Application: Suitable for indoor and outdoor lighting. 2,High-pressure mercury fluorescent lamp Characteristic: High in luminous efficiency, long in service life, and fine in photochromism. Application: Suitable for indoor and outdoor lighting. 3,High-pressure mercury reflector florescent lamp Characteristic: The inwall of glass bulb is coated with refle layer, and designed with light-focusing. High in luminous efficiency, focusing in ray of light, long in service life and fine in photochromisn. Application: Suitable for projector lighting the places of square, station, wharf and construction site. 4, High-pressure mercury black-light lamp Characteristic: The glass shell adopts UV-transmitting glass Application: Be fit for fluorescent flaw detection and fluorescence analysis. 5,Blended black-light mercury lamp