About YAMADA SHINJI
About オイレス工業
About SUGAFUJI AKIRA
About オイレス工業
About MATSUDA TETSUYA
About オイレス工業
About 粉体および粉末冶金
About powder rolling
About graphite
About General on production
About Powder compacting,sintering
About 粉末圧延法
About 黒鉛
About 銅合金
About 摺動板
About 製造方法
About 開発