11 Air purifying units for capturing and removing greenhouse gases, namely, CO2 and NOx from the atmosphere; equipment and machinery for storing and converting greenhouse gases to useful or benign products, namely, separators, scrubbers and air purification units for removing and capturing greenhouse gases, namely, CO2 and NOx from the atmosphere; heating and cooling chemical reactors for converting greenhouse gases, namely, CO2 and NOx to useful or benign products, excluding gas and liquid purification filters for use in biopharmaceutical, chemical, petrochemical, food, beverage, dairy, oil and gas, power, pulp and paper, and semi-conductor fields