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MADSUR MADSUR is a modern production company that focuses on the research and development, production and sales of intelligent instruments, water quality analysis instruments, COD detectors, ammonia nitrogen detectors, online suspended solids monitors, total phosphorus detectors, online water hardness monitors, online dissolution monitors, online residual chlorine monitors, total nitrogen detectors, multi-parameter water quality monitors, online turbidity monitors, and online monitoring equipment. It has a complete and scientific quality management system. Friends from all walks of life are welcome to visit, guide and negotiate business.