Shijiazhuang Zeyuan Optical Material Co., ***** the only professional manufacturer that can do the whole work from melting till processing colour company has been always insisting on the enterprise spirit of â??constant improvement, pioneering and strving forward, brave for innovation and persistence in developmentâ?? and it has grown on a strong development For satisfying customer&＃039;s request, our company can researching, test and produce on request. There are advanced smelters, cut and double sides polishing equipments in our company. The fused silica crucible designed and produced by ourself decrease more cost of production, the products are good sale in domestic and international markets. The colored optical glass, flint optical glass, filter, vitaglass, infra-red ray transmitting glass, heat intercepting glass, borax anhydrous L Type and O Type dross glass are our products that mainly used in the medical instrument, optical instrument, metallurgy, finance, photographic equipments, aviation, aerospace, instrument and meters, military as well as scientific research. We not only can supply raw glass boule but also can make round, square and special figure window lens in colour or colourless glass according drawing and we can make them toughened.