Electric transport vehicles operating in cold storage must first have the ability to be waterproof, anti slip, anti freezing, and cold resistant. Waterproofing requires the use of automotive grade waterproof devices, and the connectors are basically Amp's connectors. The anti slip measures are to use low hardness polyurethane or patterned rubber tires. In order to prevent rust, we will protect the overall frame and use stainless steel materials to manufacture bearings in specific areas of the vehicle body. The cold storage vehicle adopts heating treatment in all key parts of electric motor control, including solenoid valves, and the battery also undergoes cold storage antifreeze treatment.