ISO9001 accreditation; the international standard for quality management systems, has been awarded to Namiki's head office in Tokyo, domestic production facilities at Aomori, Akita and Iwaki, and to Adamant Company Limited., and as well as to its overseas production bases at Thailand and Shanghai. In addition, ISO14001 accreditation for environmental management systems has been awarded to Namiki and Adamant's Tokyo head offices and production facilities at Aomori, Akita and Thailand.