D type series air cooler is a kind of cooling equipment suitable for cold storage, which includes three types, i. E., DL, DDand DJ. It owns the advantages of compactness, lightness and saving the actual room of cold storage. It can cool down the cold storage rapidly and greatly improve the
Freshness of preserved food.

There are 3 range temp. DL type of high temperature, fin space 4.5mm, is applicable for cold storage above 0 º C, keeping fresh food such as vegetables, fruits and eggs; DD type of moderate temperature, fin space 6.0mm, for cold storage around -18 º C, keeping food such as meat and aquatic products; DJ type of low temperature, fin space 9.0mm, for -2º Ccold storage, used for freezing fresh meat and fish products and quick-freeze.