Welcome to the new and old customers call, aqueous phosphor, letter, visit the guide, business negotiations. Pengfei pigment expect to be your long-term partner! 1942, AH Mai Jige invention halogen phosphate phosphor and used in fluorescent lamps, fluorescent water-based procurement, in lighting caused a revolution. This powder high luminous efficiency, non-toxic, cheap, water-based phosphors order has been used. In the early 1970s, scientists from the Netherlands, the emission spectrum of the phosphor is theoretically calculated as shown by the discovery of phosphor 450nm, 550nm and 610nm peak three narrow composition (three-color), the color rendering index and luminous efficiency can be improved at the same time. In 1974, the Netherlands 范尔斯泰亨, who has an emission peak were synthesized in the above range of three rare earth phosphors, light emitting efficiency reaches 85lm / W, color rendering index of 85, the fluorescent lamp with the new breakthrough.