Shanghai Dahua Measurement and Control Equipment Factory is a high-tech enterprise in Shanghai specializing in the production of electric energy meters and electric energy meter calibration devices. Established in October 1980, it is renowned nationwide for pioneering the manufacturing of electric energy meter calibration devices. Over the years, it has been committed to developing various intelligent electric energy meters and testing equipment. In 1992, we were the first to develop and produce the 79 series multi rate electric energy meters. In 1994, we successfully trial produced the anti-theft 86 series electric energy meters and put them into mass production. The 79 series prepaid energy meter designed and manufactured in 1996 won the Shanghai Excellent Service Invention Gold Award in 1998, and the company was awarded multiple invention patents. Recommended products for prepaid electricity meters in urban residential communities by the Ministry of Construction. The products are sold to major power supply and metering departments, as well as factories and mines across the country. In the construction and renovation of urban and rural power grids nationwide, our factory is one of the first and third recommended manufacturers by the State Economic and Trade Commission and the State Power Corporation. The main high-tech products produced are as follows: 79 series fully electronic, prepaid, multi rate, high-precision multifunctional energy meters, 86 series anti-theft and long-life induction energy meters, DJ series portable, programmable energy meter verification devices, monitoring instruments, and centralized meter reading systems. The factory has mid to high level technical personnel, independent development and research capabilities, and complete production and testing equipment to ensure the annual production of 1 million units of various types and specifications of electric energy meters, including single, three-phase prepaid, multi rate, multifunctional, carrier, etc. Shanghai Dahua Measurement and Control Equipment Factory has advanced production equipment and comprehensive management experience. The enterprise has passed the GB/TI9001-2000 IDT ISO9001:2000 international certification and adheres to the business philosophy of "innovation, quality, and service", which can better provide satisfactory after-sales service for customers. Shanghai Dahua Measurement and Control Equipment Factory is a high-tech enterprise in Shanghai specializing in the production of electric energy meters and electric energy meter calibration devices. Established in October 1980, it is renowned nationwide for pioneering the manufacturing of electric energy meter calibration devices. Over the years, it has been committed to developing various intelligent electric energy meters and testing equipment. In 1992, we were the first to develop and produce the 79 series multi rate electric energy meters. In 1994, we successfully trial produced the anti-theft 86 series electric energy meters and put them into mass production. The 79 series prepaid energy meter designed and manufactured in 1996 won the Shanghai Excellent Service Invention Gold Award in 1998, and the company was awarded multiple invention patents. Recommended products for prepaid electricity meters in urban residential communities by the Ministry of Construction. The products are sold to major power supply and metering departments, as well as factories and mines across the country. In the construction and renovation of urban and rural power grids nationwide, our factory is one of the first and third recommended manufacturers by the State Economic and Trade Commission and the State Power Corporation.