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Recently, the State Administration for Market Regulation issued Announcement No. 22 of 2022, approving the issuance and implementation of 16 **metrological technical specifications, including the \"Calibration System Table for Ultrasonic Power Measuring Instruments\". In the field of geometric measurement, JJF1978—2022 \"Calibration Specification for Ballistometers\" was formulated and issued. A ball bar tester is a high-precision measurement device that can quickly and conveniently assess the two-axis coordination performance and dynamic profile accuracy of CNC machines. It is widely used in advanced manufacturing industries such as high-end machine tools, aircraft manufacturing, and intelligent manufacturing. The release and implementation of this standard will effectively address the issue of traceability for the measurements taken by club meters, and it will play a positive role in enhancing the metrological capabilities of China’s manufacturing industry as well as in promoting the development of manufacturing through metrology. In the field of flow measurement, JJF1971—2022 \"Calibration Specification for Impeller Anemometers\" was formulated and issued. The impeller anemometer is a wind speed measuring instrument that is widely used in industries such as national defense, disease control, firefighting, factories and mines, as well as medicine and health. The issuance of this specification fills a domestic gap; it addresses the long-standing lack of corresponding metrological technical specifications for vane anemometers. It ensures that the calibration of vane anemometers has a solid basis to follow. The implementation of this specification will contribute to improving the product quality of vane anemometers, ultimately guaranteeing the accuracy and reliability of their measurements when used across various industries. In the field of acoustic metrology, JJG2050—2022 \"Verification System Table for Ultrasonic Power Measuring Instruments\" has been revised and issued (replacing JJG2050—1990). Ultrasonic power is a crucial parameter in diagnostic, physiotherapeutic, and therapeutic ultrasonic equipment. It directly affects the safety and accuracy of clinical applications. It serves as a key parameter in international medical ultrasound standards, national standards, and industry standards. Additionally, it is one of the fundamental physical quantities involved in international key comparisons in the field of acoustics. The revised release of this calibration system table will better standardize the metrological performance of medical ultrasound equipment, providing a fundamental foundation for the accurate measurement of sound power and supporting the medical ultrasound industry. In the field of optical metrology, JJG1035—2022 \"Verification Regulations for Spectral Analyzers Used in Communications\" (replacing JJG1035—2008) was revised and issued, while JJF1975—2022 \"Calibration Specifications for Spectral Radiometers\" and JJF1976—2022 \"Calibration Specifications for Standard Lamps for Mean Color Temperature\" were formulated and issued. The technical specifications in the field of optical metrology that have been revised this time will ensure more precise and effective uniformity and accuracy of spectral characteristic values in optical communication, spectral radiation, and related fields. In particular, the \"Standard for Calibrating Standard Lamps with Average Color Temperature\" provides support for the testing of color parameters in electric light source products as well as for the evaluation of lighting comfort, thereby aiding in the evaluation, promotion, and application of healthy lighting products. In the field of ionizing radiation metrology, JJF1979—2022 \"Calibration Specification for Radioactive Inert Gas Monitors\" was formulated and issued. The issuance and implementation of this specification provide a unified, standardized, and scientific technical basis for the calibration of the metrological characteristics of radioactive noble gas monitors. To ensure the accuracy and reliability of the monitoring results for the activity of radioactive inert gases, to improve the supervision of gas emissions from nuclear facilities, and to provide metrological support for the localization of technologies related to radioactive inert gas monitors. In the field of environmental stoichiometry, JJF1977—2022 \"Calibration Specification for Online Volatile Phenol Monitors in Water\" was formulated and issued. The issuance and implementation of these standards provide instrument manufacturers and users with detailed calibration methods and a basis for traceability of measurement values, which is of great significance for ensuring the quality of instruments, further improving the quality system for automatic water quality monitoring, and enhancing the capabilities for environmental early warning and monitoring. In the field of electromagnetic metrology, JJG1148—2022 “Verification Regulation for AC Charging Piles for Electric Vehicles” (trial implementation) and JJG1149—2022 “Verification Regulation for Off-board Chargers for Electric Vehicles” (trial implementation) have been revised and issued. These revisions enhance the applicability of the regulations and the efficiency of on-site verification, clarify the metrological requirements for electric vehicle charging piles (chargers), and thus promote the rapid and healthy development of the electric vehicle industry. In the field of time-frequency metrology, JJF1980—2022 \"Specifications for the Calibration of Time Parameters in Road Traffic Technology Monitoring Systems\" has been formulated and issued. The specification provides a technical basis for the calibration of time parameters in road traffic technology monitoring systems. Its subsequent implementation will effectively address the challenge of traceability of time measurements in such systems, ensuring the accuracy and reliability of their system time. This, in turn, provides a basis for evidence collection in fair and just law enforcement efforts, thereby promoting the standardization and regularization of intelligent transportation systems. In the field of biometrics, JJF1972—2022 “Calibration Specification for Performance Parameters of Medical Cabins in Negative-Pressure Ambulances”, JJF1973—2022 “Calibration Specification for Performance Parameters of Mobile Biological Testing Laboratories” and JJF1974—2022 “Quantitative Measurement Method for the Activity of Inoculum in Biodegradation Tests” have been formulated and issued. The standards provide methodological guidance for the routine calibration of the measurement performance of the medical cabin in negative-pressure ambulances and the mobile biological testing laboratory cabin, as well as technical support for quality control and routine maintenance. The issuance and implementation of these standards will effectively support the prevention and control of outbreaks that pose a serious threat to public biological safety, such as COVID-19, and ensure that the data on the biodegradability of chemicals meets the requirements of global chemical management. In the field of medical metrology, JJG 892-2022 “Verification Regulation for Optometers” has been revised and issued (replacing JJG 892-2011). This revision will provide more comprehensive technical means and legal basis for the mandatory verification of optometers, ensuring the accurate measurement of all their functional parameters. It will effectively facilitate the implementation of the “Implementation Plan for the Comprehensive Prevention and Control of Myopia among Children and Adolescents,” jointly issued by eight departments including the Ministry of Education, the National Health Commission, and the State Administration for Market Regulation. In doing so, it will fully leverage the fundamental and supportive role of metrology in preventing myopia and safeguarding the visual health of children and adolescents. In the field of new materials and nanometry, JJF1981—2022 \"Calibration Specification for Nanoindenters\" was formulated and issued. The issuance and implementation of this standard provide a legal basis and regulatory guidance for the use of nanoindenters in the research, development, and industrial application of micro-nano film materials and devices, ensuring the accuracy of measurements of the mechanical properties of these materials and the equivalence of the resulting data. It also offers metrological support to facilitate the application of such micro-nano film materials and devices in related industries.