CASTON is a world leading manufacturer of crystals on non-linear optical (NLO) crystals and laser crystals. Under a stable QA system and with more than 20 years’ professional techniques in growth and fabrication, CASTON is capable of supplying large quantities of LBO,BBO,Nd:YVO4 and Nd:YAG crystals with top quality,high damage threshold and competitive prices for both OEM and R&D customers.