In the 1960s
            the national ultra-pure 
          
                    
            In the 1980s
            the first domestic gas analysis research
          
                    
            In the 1990s
            catalytic deoxygenation technology achieved significant development
          
                    
            In 2000
            provided gas purification solutions and equipment for domestic enterprises
          
                    
            In 2005
            the efficient deoxidizer for polyolefin won the second prize of National Technical Invention
          
                    
            In 2011
             passed the ISO quality management system certification
          
                    
            In 2015
            was selected into the Liaoning Province Energy Conservation and Emission Reduction Technology Catalo
          
                    
            In 2016
             became a national high-tech enterprise
          
                    
            In 2017
            successfully developed a 9N gas purifier with a single impurity of 0.1ppb  The ultra-pure gas purifi
          
                    
            In 2018
            successfully developed ultra-pure ammonia device and ultra-pure hydrogen chloride device  Won the se
          
                    
            In 2019
            through the national intellectual property management system
          
                    
            In 2020
            it has more than 40 invention and utility model patents .The future-establish credibility with credi