Group 1 - The State Intellectual Property Office of China has granted a patent titled "A Belt Disconnection Detection Alarm Device" to Zhangjiagang Yangtze River Cold Rolled Sheet Co., Ltd., Jiangsu Shagang Group Co., Ltd., and Jiangsu Shagang Steel Research Institute Co., Ltd. The patent announcement number is CN121134271B, with an application date of November 2025 [1] - Zhangjiagang Yangtze River Cold Rolled Sheet Co., Ltd. was established in 2011, located in Suzhou, primarily engaged in wholesale. The company has a registered capital of 5.1 billion RMB. It has participated in 217 bidding projects and holds 603 patent records, along with 44 administrative licenses [1] - Jiangsu Shagang Group Co., Ltd. was founded in 1996, also located in Suzhou, focusing on black metal smelting and rolling processing. The company has a registered capital of 4.5 billion RMB. It has invested in 124 enterprises, participated in 5,000 bidding projects, and holds 92 trademark records and 4,100 patent records, along with 65 administrative licenses [1] - Jiangsu Shagang Steel Research Institute Co., Ltd. was established in 2007, located in Suzhou, primarily engaged in technology promotion and application services. The company has a registered capital of 50 million RMB. It has invested in 1 enterprise, participated in 5 bidding projects, and holds 2,634 patent records, along with 3 administrative licenses [2]