The working hours of Baiyin Metrology and Testing Institute are 8:00- 17:00. According to official website information of Baiyin Metrology and Testing Institute, the working hours are from Monday to Friday, from 8: 30 am to 1 1: 30, from 13: 30 pm to 17: 00, and from 8: 30 am to/kloc-0 on Saturday. The Institute of Metrology is called the Institute of Metrology and Testing, and it is a municipal legal metrological verification institution established by the Bureau of Quality and Technical Supervision according to law. Metrology and testing belong to institutions in the full sense. The institution to which the measurement belongs. The Institute of Metrology and Testing is a municipal legal metrological verification institution established by the Bureau of Quality and Technical Supervision according to law. Therefore, I am mainly responsible for compulsory verification, measurement test and calibration of measuring instruments, verification, test and calibration of standard measuring instruments, measurement technical consultation, measurement technical service, measurement technology development, measurement instrument development, energy-saving detection, energy-saving technical service, social justice measurement service and technical training of measurement personnel.