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GRINM Electro-Optic Materials Co., Ltd. (GRIEOM), a subsidiary company of General Research Institute for Nonferrous Metals (GRINM), is specialized in manufacturing sophisticated photoelectric materials. The company is the result of the merger between Beijing Guojing Infrared Optical Technology Co., Ltd. and Guorui Electronic Materials Co., Ltd. in 2010. The company is located in NO.4 Baihe Road, LangfangEconomic & Technical Development Zone,Hebei province, is a high-tech enterprise in Hebei province.
 
GRIEOM is one of the leading enterprises in the research and development and production of Germanium and compound semiconductor materials in China. Its predecessor can trace back to the Germanium research office of GRINM in 1956. Over the last 60 years, with support from GRINM, GRIEOM has produced China's metal Germanium and other infrared optical materials including large diameter optical grade Germanium monocrystal, HB-GaAs,GaPmonocrystal, Low dislocation Germanium monocrystal, VGF-GaAs monocrystal.  
 
GRIEOM’ s production line of Germanium monocrystal boasts an annual production capacity of 30 tonnes. The specification, quality and market share of the productsare all the leading level in the world. The production line of HB-GaAs monocrystal boasts an annual production capacity of 600,000 pieces, whichis one of the main suppliers of GaAs substrate for infrared LED in the world. The optical processing production line can produce the polished and coated windows of Germanium monocrystal, silicon monocrystal and other infrared optical materials. The company’s products are widely used for infrared thermal imaging, LED display and sensing, solar photovoltaic, laser processing and other fields.
 
GRIEOM has a high-level research and development team, committed to the research and development of new optoelectronic materials and product technology upgrading, and can provide the customerswith the adequate product technical support.The company has established standardized quality management and safety environmental protection system,which can provide the customers with the stable and reliable product supply security.
 
Weare adhering to the enterprise spirit of "professionaltechnology, innovation, cooperation and dedication", consistently providing the customers with the quality products and services in the world, and creating brilliant with customers hand in hand.