Group 1 - The core viewpoint of the article highlights the collaborative efforts of Beijing, Tianjin, and Hebei's market regulatory departments in establishing seven joint measurement technical standards, addressing key areas such as air pollution prevention and water quality monitoring [2] - The newly released measurement technical standards include the pioneering "Calibration Specification for Volatile Organic Compounds Photoionization Online Monitoring Instruments," which introduces humidity interference error indicators and aims to control measurement errors within ±5% of full scale [2] - The article emphasizes the importance of these standards in filling the performance evaluation standard gap for monitoring instruments in China, ensuring accurate and unified measurement values, and guiding manufacturers to enhance product quality for better environmental protection [2] Group 2 - In the field of water environment governance, the "Automatic Water Quality Intelligent Analysis Instrument Calibration Specification" addresses the issue of manufacturers relying on internal testing methods, which lack a unified standard for effective traceability to national benchmarks [3] - The specification establishes scientific measurement performance indicators, ensuring that the error for spectrophotometric instruments does not exceed ±5% and for volumetric instruments does not exceed ±3%, with repeatability not greater than 3%, thereby strengthening the reliability of detection data [3] - The three regions will continue to improve the regional measurement collaboration system, leveraging measurement support for technological innovation and promoting industrial development, thus integrating measurement work into the broader context of coordinated development in the Beijing-Tianjin-Hebei area [3]