Gas meters (HS 902810)
Amendment to Technical Specification for Verification and Inspection of Diaphragm Gas Meters (9 page(s), in English; 7 page(s), in Chinese)
The BSMI proposes to revise the technical specification for verification and inspection of diaphragm gas meters. The proposed amendments is about the additional requirements for marking, the leakage rate of external airtight, the documents required for verification and the material of seal.