Legal analysis
If the flow rate is far below the minimum flow rate to ensure accuracy, there will be no output (such as vortex flowmeter) or the output signal will be cut off as a small signal (such as differential pressure flowmeter), which is unfavorable and unfair to suppliers. In order to prevent the loss of benefits, for a specific set of thermal energy metering equipment, the supply and demand sides often agree that a certain flow value is the "agreed lower limit flow" according to the flow measurement range and the achievable range, and agree that if the actual flow is less than the agreed value, it will be charged according to the lower limit flow. The metrological administrative department of the people's government at or above the county level may set up metrological verification institutions according to needs, or authorize metrological verification institutions of other units to perform compulsory verification and other verification and testing tasks. Personnel who perform the verification and testing tasks specified in the preceding paragraph must pass the examination. This function is usually realized in the flow display instrument. The metrological administrative department of the local people's government at or above the county level shall, according to the needs of the local area, establish public standard instruments of measurement, which shall be used after passing the examination presided over by the metrological administrative department of the people's government at a higher level. Enterprises and institutions may, as required, establish standards of measurement for their own use, and the highest standards of measurement shall be used after passing the examination presided over by the metrological administrative department of the relevant people's government. Metrological verification shall be carried out on site in accordance with the principle of economy and rationality. Metrological verification must be carried out in accordance with the national metrological verification system table. The national metrological verification system table shall be formulated by the metrological administrative department of the State Council.
legal ground
Measures of People's Republic of China (PRC) Municipality on Invoice Management
Fifteenth units and individuals that need to receive and purchase invoices shall go through the formalities of receiving and purchasing invoices with the tax registration certificate, the identity certificate of the agent and the stamp of the special seal for invoices printed according to the style specified by the competent tax department of the State Council. The competent tax authorities shall, according to the business scope and scale of purchasing units and individuals, confirm the types, quantities and methods of purchasing invoices, and issue invoice purchasing books within 5 working days. When receiving and purchasing invoices, units and individuals shall report the use of invoices in accordance with the provisions of the tax authorities, and the tax authorities shall conduct inspections in accordance with the provisions.
Article 16 Units and individuals that need to use invoices temporarily may directly apply to the tax authorities at the place of business for the issuance of invoices on the basis of written certificates of buying and selling commodities, providing or receiving services and engaging in other business activities and the identity certificate of the agent. If taxes should be paid in accordance with the provisions of tax laws and administrative regulations, the tax authorities shall pay taxes first and then issue invoices. According to the needs of invoice management, the tax authorities may entrust other units to issue invoices in accordance with the provisions of the competent tax authorities in the State Council.