Chongqing YanRui Instrument Co.,Ltd is one of the leading manufacturers of analytical instrumentation in China. YanRui is committed to providing customers with high-quality scientific instruments, professional services, and efficient C/S and O/N/H analysis and test solutions.YanRui keeps optimizing and improving product lines based on the orientation of customer and market demands. The product application covers metallurgy, foundry and casting, mechanical processing, electric power, mining, petrochemical, security and other fields industries.