Iljin Diamond Co., Ltd. manufactures and sells tool materials in South Korea, the United States, Europe, Japan, China, and internationally. It offers ILJIN polycrystalline diamond, a material used for cutting tools; ILJIN polycrystalline cubic boron nitride, a material used for cutting tools; ILJIN synthetic diamond for use in saw blades, cutters, core drill bits, etc.; and ILJIN premium synthetic diamond for use in mining bits and multi-wires to cut granite applications. The company provides ILJIN metal bond diamond for the processing of nonferrous materials; ILJIN resin and vitrified bond diamond, a synthetic diamond that is used to process nonferrous materials; ILJIN micron powder, a micron-sized synthetic diamond and CBN powder that are used in manufacturing processes, such as grinding, polishing, and finishing in various industries, such as electronics, semiconductors, and automobiles; and shape reformed diamond. In addition, it offers ILJIN CBN powder, a material for processing various metallic materials comprising super-alloy, bearing steel, and heat-treated steel; tungsten carbide rod used in various processes of work piece materials in the fields of automobile, aircraft, energy, IT, and medicine; tungsten carbide roll and diamond wire that are used to cut solar cell silicon, LED sapphire, and the glass for mobile phone screens; and polycrystalline diamond compact products. The company was founded in 1985 and is based in Seoul, South Korea. Iljin Diamond Co., Ltd. operates as a subsidiary of ILJIN Holdings Co., Ltd.