空调久未开启用前需清洁，国内空调相关企业存量超160万家

Core Insights - The article emphasizes the importance of cleaning air conditioning units that have not been used for a year before turning them on, as neglecting this can lead to health issues such as Legionnaires' disease. Group 1: Industry Overview - As of now, there are 1.6442 million existing air conditioning-related enterprises in China, with 40.77% located in the East China region [3] - In 2024, the registration volume for air conditioning-related enterprises reached 228,100, showing a year-on-year decrease of 9.57%. However, 10.88 million enterprises have been registered this year, with 96,800 registered in the first four months, reflecting a year-on-year growth of 32.78% [2] Group 2: Regional Distribution - The majority of air conditioning-related enterprises are concentrated in East China, followed by South China (14.06%), North China (13.6%), and Central China (11.89%) [3] Group 3: Industry Segmentation - The air conditioning-related enterprises are primarily engaged in wholesale and retail, accounting for 71.22 million enterprises, which is 43.31% of the total. Other significant sectors include construction, scientific research and technical services, and manufacturing [4]