Shanghai Highly issued a abnormal announcement, the company's main business is engaged in the research and development, production, and sales of refrigeration rotary compressors, refrigeration electric machines, and castings, as well as the research and development, production, and sales of automotive thermal management systems and key component products, mainly used in household air conditioners, autos, etc. The company's controlling subsidiary Shanghai Highly Cold is a research and production enterprise dedicated to industrial equipment cooling systems, with its revenue mainly coming from the metallurgical industry's high-temperature air conditioning and other fields. Shanghai Highly Cold sells cooling systems for lithography machines, this business is relatively small, and the proportion of its annual sales in the past three years to Shanghai Highly's annual revenue has been less than 0.003%.