sichuan xiangfurui instruments co., ltd. [tel: 13808101569] produces high-frequency infrared carbon-sulfur analyzers, gas analyzers, flue gas analyzers, gas detectors, high-efficiency metal filters, industrial analyzers, physical and chemical materials and reagents, laboratory equipment, etc. for research and development, production and sales. the company has strong technical strength and is committed to the innovation and research of physical and chemical testing technology, the establishment of verification procedures and the research of methods.