Kaifeng Weili Instrument Testing Company was established in 2016. In February 2019, the company was recognized by the China National Accreditation Service for Conformity Assessment (CNAS) with certificate number CNAS L12016. Kaifeng Weili Instrument Testing Co., Ltd. is an organization engaged in flow instrument calibration services. The company owns DN15mm、DN20mm、DN25mm、DN32mm、DN40mm、DN50mm、DN65mm、DN80mm、DN100mm、DN125mm、DN150mm、DN200mm、DN250mm、DN300mm、DN400mm、DN500mm、DN600mm Static volume method water flow calibration device, flow range (0.2~112.0) m3/h; Accuracy level 0.1; Calibration work can be carried out for electromagnetic flow meters, ultrasonic flow meters, vortex flow meters, and turbine flow meters. The company has 3 senior engineers and more than 10 engineers and related professional technical management personnel. The company adheres to the business philosophy of fairness, impartiality, and accuracy, actively providing excellent customer service and meeting various customer needs.