Legal basis: National Metrology Law of People's Republic of China (PRC).
Article 12 Enterprises and institutions that manufacture or repair measuring instruments must have facilities, personnel and verification instruments and equipment suitable for the measuring instruments they manufacture or repair, and have passed the examination by the metrological administrative department of the people's government at or above the county level and obtained the License for Manufacturing Measuring Instruments or the License for Repairing Measuring Instruments. If an enterprise that manufactures or repairs measuring instruments has not obtained the License for Manufacturing Measuring Instruments or the License for Repairing Measuring Instruments, the administrative department for industry and commerce shall not apply for a business license.
Thirteenth enterprises and institutions that manufacture measuring instruments to produce new measuring instruments that have not been produced by their own units must pass the measurement performance assessment of their samples by the metrological administrative department of the people's government at or above the provincial level before they can be put into production.