The temperature of the cold storage needs to be determined according to the type and requirements of the stored items. Here are some common storage items and corresponding temperature ranges:

Meat and poultry: usually need to be stored at temperatures below -18°C to maintain their freshness and nutritional value.

Fruits and vegetables: usually need to be stored at a temperature of 0°C to 10°C to prolong their freshness and reduce nutrient loss.

Dairy products and frozen foods: usually need to be stored at temperatures below -18°C to maintain their freshness and taste.

Drugs and vaccines: usually need to be stored at a temperature of 2°C to 8°C to maintain their effectiveness and safety.

Chemicals and experimental samples: usually need to be stored under specific temperature and humidity conditions to maintain their stability and safety.

In short, the temperature of the cold storage should be determined according to the type and requirements of the stored items to ensure its freshness, safety and effectiveness. If you are not sure how to choose the temperature of the cold storage, it is recommended to consult a professional technician or a manufacturer of related storage items.