About ISHIKAWA Y
About Hitachi Ltd., Tsuchiura, JPN
About YOSHIMURA T
About Hitachi Ltd., Tsuchiura, JPN
About ARAI M
About Hitachi Ltd., Tsuchiura, JPN
About Vacuum
About stainless steel
About Corrosion
About ステンレス鋼
About 重水素
About 浸透
About 表面酸化