About MURAKI MASAYOSHI
About 三菱石油 潤滑油研
About SANO TAKASHI
About 三石テクノ
About DONG D
About 三石テクノ
About トライボロジスト
About synthetic lubricant
About Refrigerating equipment
About Various petroleum products and their manufacturing in general
About 冷媒
About 雰囲気
About ポリオールエステル
About 基油
About 摩擦
About 摩耗特性