Spectrum between 350nm and 450nm, with a chief wavelength at 365nm, more than 700 varieties and power between 100W and 25KW, widely used in the industries such as wooden floor, furniture, decoration, paper-printing, glazing, plastic daubing etc. It is used to solidify photosensitive inks in semiconductor industry, printed circuit board industry and electronic components industry. It is also popular in optic industry and photoelectric industry as well as UV conglutination industry.