The analytical samples in the chemical industry have the characteristics of high temperature, high pressure, high salt, organic solvent, acid-base corrosion, etc., which leads to the analysis instrument can not directly sample and detect, and it needs to be pre-treated in the early stage. Dongrun can provide customers with perfect technical solutions, from on-site sampling analysis, to provide accurate instrument selection, research and development design, integrated manufacturing, installation and commissioning, operation and maintenance integrated solutions. Dongrun can provide customers with comprehensive technical solutions, including on-site sampling analysis, accurate instrument selection, research and development design, integrated manufacturing, installation and commissioning, and integrated operation and maintenance solutions.