1
Heat transfer liquids for use in heating systems; Antifreeze; Water treatment preparations
6
Junctions of metal for pipes; Clips of metal for pipes; Tanks of metal
9
Photovoltaic apparatus and installations for generating solar electricity; Memory modules; Apparatus and instruments for accumulating and storing electricity; Apparatus and instruments for accumulating electricity
11
Underfloor heating apparatus and installations; Regulating accessories for water or gas apparatus and pipes; Coils [parts of distilling, heating or cooling installations]; Furnace boilers; Heating elements; Heating installations for fluids; Boilers for use in heating systems; Radiators; Thermal storage instruments [solar energy] for heating; Water treatment filters; Water conditioning units; Water conditioning installations; Water conditioning apparatus; Water treatment apparatus for water softening; Membrane filtration units for water treatment apparatus; Cartridge filtration units [water treatment equipment]; Water treatment apparatus for water softening for domestic use; Accumulation boilers