AOSTECH PHOTON ICS. (hereinafter referred to as “AST”) is a high-technology company specialized in manufacturing and developing various of crystal material products. With more than twenty years experience, AST  is committed to becoming the most professional manufacturer and supplier in the world. Our main products are as follows: • Laser crystals: Nd:YAG/Cr:YAG/LBO/BBO/YVO4/Nd:YVO4/Nd:GdVO4/Nd:YAP/Tm:YAP/Er:YAP/Er:YSGG/Er:YAG ect optics and components for laser system and applications. Our products are widely used in the laser systems, thermal imaging cameras, medical imaging systems, nuclear detection instruments, medical and biological equipments, defense and security, scientific research and aerospace. In the past few years, we have been cooperated closely with many scientific research centers, laboratories, universities and instrument manufacturers around the world, all our customers are satisfied with our products and services.