Why can salt plates be used in cold storage?

Salted boards can be used in cold storage mainly because of their good thermal insulation properties. The porous structure inside the salted board can trap air, forming an effective thermal insulation layer and reducing heat conduction. In addition, the salted board itself has a high density and is made of strong and durable material, which can withstand the influence of temperature changes and humidity inside the cold storage and maintain a stable temperature and humidity environment in the cold storage, thus ensuring the quality and safety of refrigerated items.