Small cold storage is generally built for the preservation of fruits and vegetables and the freezing of meat and aquatic products. The temperature design range of fresh-keeping cold storage is 0℃~ 15℃, and that of low-temperature cold storage is-18℃~ 25℃, so the cost is generally not high. It will take about 2 weeks to build a small cold storage of about 15 cubic meters near Zhejiang and Shanghai.

Small cold storage generally uses rigid polyurethane foam or high-density polystyrene as thermal insulation material, and the storage body has the characteristics of good rigidity, high strength, good thermal insulation performance and flame retardancy.

Small cold storage generally adopts eccentric hook connection or on-site foaming fixation of embedded parts in the plate wall, which has good sealing performance, convenient disassembly and transportation, small on-site construction and installation, labor saving, good quality and quick effect. Small cold storage is equipped with advanced refrigeration unit, with reasonable matching between storage capacity and refrigeration equipment, fast refrigeration speed, energy saving, full-automatic operation and safe and reliable operation.

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The fluorine machine refrigeration equipment in small cold storage is generally small in size, low in noise, safe and reliable, with high degree of automation and wide in application range, which is suitable for small cold storage in rural areas.

At present, the better fully enclosed refrigeration compressor on the market, the quality of refrigeration equipment imported from developed countries or Sino-foreign joint ventures is relatively reliable, but the price is more than 50% higher than that of domestic machinery, which is more suitable for small-scale cold storage in cities and towns.

Small assembled cold storage with the cold storage temperature below 0 (- 16) needs 10 # channel steel overhead on the ground (under the storage plate) to make it naturally ventilated.