A Fujian Food Co., Ltd. is located in the economic zone on the west side of the Straits. It is a comprehensive industrial company integrating R & D, production, sales, and logistics of food products such as condiments, egg products, rice wine, and catering customization.The workshop is composed of concrete structure and has 5 floors. The second floor is an egg product production workshop (the overall area is about 8000 square meters). The workshop has many production equipment which has high heat and low oxygen content of the air. It belongs to a typical high-temperature and high-humidity environment with poor air circulation. In view of this working condition, it is planned to adopt evaporative air cooler for regional hypothermia.

Based on the environmental features, the engineering department choose this three types of AOLAN evaporative air cooler to achieve air supply and temperature cooling in production area: AZL25-ZX32C，AZL25-ZC32C and AZL30-ZX32C.Besides, equipped many other centriufugal exhaust air fan to discharge the air so that the workshop can realize local ventilation, temperature cooling and air exhaust.

The installation of the equipment passed the acceptance. After a period of use, the customer's satisfaction was tracked, and feedback from the production workshop workers was obtained - The indoor air became significantly fresher, the breathing of people was smoother, the indoor temperature was reduced, and the working environment was greatly improved. The cost of electricity consumed during use is also 75% lower than the factory budget.