| Classification of Products (CZ-CPA_2015) - level 2 - Division | 20 | Chemicals and chemical products | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 4 - Class | 2011 | Industrial gases | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 4 - Class | 2012 | Dyes and pigments | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 4 - Class | 2013 | Other inorganic basic chemicals | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 4 - Class | 2014 | Other organic basic chemicals | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 4 - Class | 2015 | Fertilisers and nitrogen compounds | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 4 - Class | 2016 | Plastics in primary forms | 
                
                  
                    | Classification of Products (CZ-CPA_2015) - level 4 - Class | 2017 | Synthetic rubber in primary forms |