Jinan Jingyi Photonics Technology Co., Ltd. is a manufacturer and trading company based in Jinan, China, specializing in crystals for lasers and optical telecommunication. Established in 2009, the company employs 11 to 50 people and is recognized as a world-famous manufacturer of Non-Linear Optical (NLO) crystals and laser crystals. Jinan Jingyi Photonics Technology Co., Ltd. has a complete crystal growth line, encompassing crystal growing, processing, and coating, supported by excellent testing equipment. They leverage the R&D capabilities of well-known scientific research institutes and have developed novel crystal growth techniques, including a water solution technique for high-quality, large-caliber KD*P optical crystals with high deuterium, reaching international leading levels. The company holds a patent for "light bath nurturing high-quality, high volume deuterium DKDP crystal devices" (Application No.: 20061017955.7). Their main products include KD*P, KTP, BBO, and Nd: Yag crystals, with a particular focus on KD*P crystals. Jinan Jingyi Photonics Technology Co., Ltd. maintains a detailed quality control system ensuring traceability from finished goods to raw materials. Their products are exported to international markets including the USA, Japan, Germany, and other European and Asian countries.