The commercial refrigeration of food must first increase the value of the product. At present, there are SM liquid film, Jing 2B high-fat film, AB preservative, SG sucrose ester, wax liquid, etc. The purpose of paint disposal is to improve the appearance of the fruit. Different environments determine different preservation effects. Most of these coatings in commercial refrigeration contain biocides and therefore have anti-corrosion functions. When disposing of the paint, pay attention to the use concentration and the thickness of the film formed on the fruit. Too high a concentration and too thick film will cause anaerobic respiration, which will seriously affect the storage quality. Therefore, the smear disposal in commercial refrigeration is postharvest in various places. The effect is generally better when used on fruits that are ready for sale and short-term storage.

　　It is generally considered that oranges are 2~3℃, and the suitable temperature and humidity conditions for citrus storage vary according to different types. In commercial refrigeration, the temperature of sweet orange is 3~5°C, and the temperature of banana orange is 7~9°C. However, there are differences in cultivation conditions and varieties in different regions, which should be determined according to different varieties of different regions. The humidity control of citrus commercial refrigeration storage should also be mastered according to the requirements of different varieties. For example, Sichuan sweet oranges should be stored in commercial refrigeration with a relative humidity of more than 95%, and Wenzhou oranges should be stored in commercial refrigeration with a relative humidity of about 85%.

　　 Some insiders pointed out that commercial refrigeration companies should pay attention to the opportunities brought by the market growth period and upgrade the entire industrial chain from raw materials, core components, and manufacturing. From the current point of view, my country's commercial refrigeration products are gradually developing in the direction of serialization, intelligence, and fashion. Whether the product has excellent technology determines how far the brand can go. Commercial refrigeration If the concentration of carbon dioxide in the storage environment is too high, it is easy to cause carbon dioxide damage, and citrus fruits are sensitive to carbon dioxide. Different types of citrus have different tolerance to carbon dioxide.

　　Improve the effect of food commercial refrigeration preservation. On the basis of biocide treatment, a 0.01-0.02 mm thick polyethylene film is used for single fruit folding or bagging: weight loss can be reduced. After rain, citrus should be harvested in the early morning when it is cool. The dew is not dry in the early morning. The harvested fruits should be gently placed in a fruit basket or commercial refrigeration. The damaged fruits, ground fruits, diseased fruits and secondary fruits should be placed separately, not mixed with good fruits. The harvested fruits should be transported to the storage commercial refrigeration place in time for careful selection and grading, so that the specifications and quality of the fruits of the same grade are consistent, and the preservation treatment should be carried out in time. It is reported that the air purifier launched by TCL this time uses the high-efficiency HEPA composite filter element of the internationally renowned brand, the five-layer filter design and the unique titanium filter, and it has many exclusive advantages such as long life and high sterilization rate. In terms of functional experience, TCL air purifier adopts the very popular touch technology, which is more convenient to use.

　　 In terms of promotion, refrigerated showcase commercial refrigeration also cooperates with the series of plans. In addition to the promotion of traditional channels such as buses and TV media, the promotion of commercial refrigeration on the store terminal and the Internet will also be correspondingly increased. Promotion on platforms such as Baidu, as well as micro-marketing through Weibo and WeChat to increase the visibility and influence of air purification products, commercial refrigeration sales and promotion methods present a complete system.