Group 1 - The State Intellectual Property Office of China has granted a patent for a "sintering device and method for cathode materials" to several companies including Guangdong Bangpu Recycling Technology Co., Ltd. and Hunan Bangpu Recycling Technology Co., Ltd. [1] - Guangdong Bangpu Recycling Technology Co., Ltd. was established in 2005, located in Foshan, with a registered capital of 1,474.7326875 million RMB. The company has invested in 13 enterprises and participated in 105 bidding projects, holding 2,366 patents and 326 administrative licenses [1]. - Hunan Bangpu Recycling Technology Co., Ltd. was founded in 2008, located in Changsha, with a registered capital of 60 million RMB. The company has invested in 3 enterprises and participated in 93 bidding projects, holding 2,354 patents and 233 administrative licenses [1]. Group 2 - Hunan Bangpu Automotive Recycling Co., Ltd. was also established in 2008, located in Changsha, with a registered capital of 53.13 million RMB. The company has invested in 1 enterprise and participated in 29 bidding projects, holding 644 patents and 36 administrative licenses [2]. - Ningde Bangpu Recycling Technology Co., Ltd. was established in 2019, located in Ningde, with a registered capital of 1,290 million RMB. The company has participated in 20 bidding projects, holding 63 patents and 331 administrative licenses [2].