Eurostat, Luxembourg. 28251440 Machinery and apparatus for filtering or purifying gases by catalytic process (excluding intake air filters for internal combustion engines, machinery and apparatus for filtering or purifying air): Production sold 28251440 Machinery and apparatus for filtering or purifying gases by catalytic process (excluding intake air filters for internal combustion engines, machinery and apparatus for filtering or puri /in 1000 p/st /Reporting Country: Germany.