About RONKAINEN H
About VTT Manufacturing Technol., Espoo, FIN
About VARJUS S
About VTT Manufacturing Technol., Espoo, FIN
About HOLMBERG K
About VTT Manufacturing Technol., Espoo, FIN
About DLC film
About Carbon and its compounds
About Lubrication in general
About 水潤滑
About DLC被覆
About トライボロジー