Semi-processed plastic substances, in particular for use in heating, ventilating and air conditioning apparatus and installations built thereof; packing, stopping and insulating materials; flexible pipes (non-metallic) in particular for heating, ventilating and air conditioning apparatus and installations built thereof

Building materials (non-metallic); rigid pipes (non-metallic) for building, in particular for heating, ventilating and air conditioning apparatus and installations

Constructions, repair and installation services, in particular in the field of heating, ventilating and air conditioning installations in buildings; retrofitting of heating, ventilating and air conditioning installations in buildings

Building and construction drafting and consulting of and with regard to heating, ventilating and air conditioning apparatus and installations; technical consultancy and expertise in the field of heating, ventilating and air conditioning engineering; design and development of computer hardware and software, in particular in the field of heating, ventilating and air conditioning engineering

Building and construction planning and advising thereof and, respectively, in connection with heating, ventilating and air conditioning apparatus and instruments; providing technical advice and expert opinion in the field of heating, ventilating and air conditioning technique.