Since 1978, Porlex has been designing and developing industry-leading ceramic products in Osaka, Japan. Known around the world for ground-breaking coffee grinders, the specialty coffee industry has set Porlex Grinders as the benchmark for quality. Porlex's unique ceramic manufacturing technology produces the most precise ceramic burrs on the market. Not only are Porlex Grinders designed in Japan, they are also made entirely in Japan in the Porlex factory in Kagoshima to exacting standards. This is the only way to ensure the highest quality. Porlex burrsets are often copied, but never equalled. Porlex do not provide burrsets to be used in other grinders. Only grinders stamped with the Porlex mark use authentic Porlex burrsets.