According to the customer's requirements and the results of the site survey, a customized cold storage unit plan is designed. This includes selecting the appropriate compressor type (such as screw, piston), condenser type (air - cooled, water - cooled, evaporative), and air cooler model, etc., and determining key parameters of the unit such as refrigeration capacity, refrigerant type, and cooling method. Meanwhile, the layout of the refrigeration system is designed, taking into account details such as pipeline routing and equipment installation location to ensure the efficient operation and easy maintenance of the system.