GS0071: Hollow-fibre membrane modules as part of machinery for use in plants for gas separation and gas processing, not for use with fluids or for separation of oily contaminants.
GS0171: Hollow-fibre membrane modules of polymers for use in plants for gas separation and gas processing, not for use with fluids or for separation of oily contaminants.
GS0111: Hollow-fibre membrane modules as separators for use in plants for gas separation and gas processing, not for use with fluids or for separation of oily contaminants.