Shanghai Liangxin Electrical (SZ:002706) Jin Rong Jie·2025-06-28 08:19Group 1 - The State Intellectual Property Office of China granted a patent for an "isolation type transfer switch" to Yier San Electric Co., Ltd. and Shanghai Liangxin Electric Co., Ltd. The patent was announced with the authorization number CN223038839U and the application date of May 2025 [1] - The patent describes a transfer switch that includes a shell, an operating handle with installation holes, and a spring mechanism that locks the position of the movable contacts, enhancing operational efficiency and preventing contact sticking [1] - The design features a smooth sliding connection between the arc groove and the connecting rod, which improves the operational fluency and simplifies assembly [1] Group 2 - Yier San Electric Co., Ltd. was established in 2004 in Wenzhou, focusing on the manufacturing of electrical machinery and equipment, with a registered capital of 100 million RMB. The company has invested in 3 enterprises and participated in 12 bidding projects, holding 72 patents and 2 trademarks [2] - Shanghai Liangxin Electric Co., Ltd. was founded in 1999 in Shanghai, primarily engaged in the manufacturing of computers, communications, and other electronic devices, with a registered capital of approximately 1.123 billion RMB. The company has invested in 12 enterprises, participated in 456 bidding projects, and holds 2,698 patents and 311 trademarks [2]