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Over the years, GEKO control valves have been cooperating with ZJIM(Zhejiang Institute of Metrology), LNJL(Liaoning Institute of Metrology) and NMI(National Institute of Metrology) in quality method, standard meter method, weighing apparatus, water meter, flowmeter and the other testing devices. From the initial application in domestic metrology institutes’ many experimental platform, the use of the water meter, flow meter manufacturing enterprises across the country, major cities gradually expanded to the flow precision control of water groups and accurate flow calibration of petrochemical enterprises, GEKO control valves are widely recognized and recommended by the specific market, and set up the benchmark in the industry. Besides a number of state-level metering stations, there are also numerous water utilities groups: Shanghai Water, Shenzhen Water, Ningbo Water, Hangzhou Water, Jilin Water, Wuhan Water, Shenyang Water, etc., and we are also currently in design negotiations with some other domestic water utilities groups in major cities.