POWERCHINA Ltd(SH:601669) Jin Rong Jie·2025-06-28 00:47Group 1 - The State Intellectual Property Office of China has published a patent application for a "clarification zone height detection device and flocculant dosing system" by China Electric Power Construction Group Central South Survey and Design Institute Co., Ltd. and China Electric Power Construction Environmental Protection Technology Co., Ltd. The patent was published under CN120208383A with an application date of March 2025 [1] - The patent describes a device that includes a clarifier and a support structure equipped with two gravity monitoring devices, which are used to detect the height of the clarification zone and sedimentation zone [1] Group 2 - China Electric Power Construction Group Central South Survey and Design Institute Co., Ltd. was established in 1994 and is based in Changsha. The company primarily engages in the production and supply of electricity and heat, with a registered capital of 135 million RMB. It has invested in 88 companies and participated in 5,000 bidding projects, holding 58 trademark records and 1,966 patent records [2] - China Electric Power Construction Environmental Protection Technology Co., Ltd. was founded in 2014, also located in Changsha, focusing on ecological protection and environmental governance. The company has a registered capital of 10 million RMB, invested in 1 company, participated in 419 bidding projects, and holds 1 trademark record and 124 patent records [2]