A lubricant is a substance that helps to reduce friction between surfaces that come into contact with each other, resulting in a reduction in the amount of heat generated as the surface moves.…
Recently, covid 19 outbreak spreads in Shanghai, China. There are more than 25,000 new asymptomatic domestic infections every day. China is implementing a dynamic zero-out policy. A leading respiratory expert said the key to COVID-19 prevention and c…
Molybdenum disulfide is a solid powder made from natural molybdenum concentrate powder, which is the modern…
Gold is a high-quality hedge hedging tool, favored by investors. Especially in recent years, with the increasing instability of the world economy, gold has become one of the preferred asset allocations of investors because of its functions of hedging…