Group 1 - The core viewpoint of the news is that China Tianying Co., Ltd. and Jiangsu Tianying Environmental Energy Equipment Co., Ltd. have obtained a patent for a mechanical energy storage system's elevator traction device, which aims to reduce investment costs and enhance safety [1] Group 2 - China Tianying Co., Ltd. was established in 1984 and is located in Nantong City, primarily engaged in ecological protection and environmental governance, with a registered capital of 2,500.783182 million RMB [2] - The company has made investments in 47 enterprises and participated in 571 bidding projects, holding 44 trademark records and 378 patent records [2] - Jiangsu Tianying Environmental Energy Equipment Co., Ltd. was founded in 2010, also located in Nantong City, focusing on specialized equipment manufacturing, with a registered capital of 11.856 million USD [2] - This subsidiary has invested in 2 enterprises and participated in 55 bidding projects, holding 2 trademark records and 876 patent records [2]