Group 1 - The State Intellectual Property Office of China has published a patent application by Qingdao Haier Air Conditioning Co., Ltd. and its affiliated companies for a control method for air conditioning indoor units, aimed at optimizing energy efficiency by managing fresh air intake based on specific parameter checks [1] - The patent application was filed on January 2024 and is identified as CN120403062A, indicating a focus on innovative technology in the air conditioning sector [1] Group 2 - Qingdao Haier Air Conditioning Co., Ltd. was established in 1996 with a registered capital of 93,638.16 million RMB, primarily engaged in the manufacturing of electrical machinery and equipment [2] - Qingdao Haier Air Conditioning Electronics Co., Ltd. was founded in 1999 with a registered capital of 96,709.09 million RMB, focusing on specialized equipment manufacturing [2] - Qingdao Haier Intelligent Technology Research and Development Co., Ltd. was established in 2014 with a registered capital of 13,000 million RMB, dedicated to research and experimental development [2] - Haier Smart Home Co., Ltd. was founded in 1994 with a registered capital of 943,811.49 million RMB, also involved in the manufacturing of electrical machinery and equipment [3]