*First, reduce the mutual wear between the accessories of the semi-trailer
As we all know, in the process of using the semi-trailer, only the accessories are installed very reasonably, and the cooperation between them can ensure the safety of transportation. If the accessories of the semi-trailer are worn out more seriously, the use of the semi-trailer will be greatly affected. Therefore, the use of lubricating oil in the process of using a semi-trailer can alleviate the friction between the parts.
*Second, effectively prevent the rust of semi-trailers
Semi-trailers are mostly made of steel and a small amount of metal. If the semi-trailer is not well lubricated, it will rust during long-term use. If the lubricant is applied during the use of the semi-trailer, the contact between the metal and the outside air can be well prevented, and the possibility of rusting of the semi-trailer can be reduced.