About YAMAGUCHI K
About Xebec Technol. Co. Ltd., Tokyo, JPN
About WEI Y
About Beijing Univ. Technol., Beijing, CHN
About HORAGUCHI I
About Toyota Coll. Technol., Aichi Prefecture, JPN
About Precision Engineering
About grinding stone
About Grinding
About ダイヤモンド状炭素
About 繊維
About 砥石車
About 開発