Group 1 - The core viewpoint of the news is that Changhong Meiling Co., Ltd. has obtained a patent for a new washing machine knob fixing structure, enhancing the versatility of washing machine controls [1] Group 2 - Changhong Meiling Co., Ltd. was established in 1996 and is located in Hefei City, primarily engaged in the manufacturing of electrical machinery and equipment [2] - The company has a registered capital of 1,029,923,715 RMB [2] - Changhong Meiling has invested in 25 enterprises and participated in 1,383 bidding projects [2] - The company holds 906 trademark records and 4,744 patent records, along with 41 administrative licenses [2]