topic
What is oiliness?
Oiliness refers to the action of physically or chemically forming an oil film that clings to lubricated surfaces, such as metal surfaces.
新製品構想2
油性の話は次回やる予定ですが、油性向上剤も作りたいのです。
Why ZDDP is recommended for old four-wheeled vehicles, motorcycles, and light vehicles?
Why ZDDP is recommended for old four-wheeled vehicles, motorcycles, and light vehicles, and the rationale for the amount of ZDDP addedなぜ高濃度単剤？
なぜ高濃度の単剤を販売し始めたか、その利点