Heating installations, namely, heating boilers, heating elements and their parts, namely, gas-water heat exchangers, stainless steel plate heat exhangers and three-way valves for heating installations

Heating installations; Burners for heating installations; Heating boilers; Heating elements; Heat exchangers, other than parts of machines; Heat regulating devices being parts of heating installations; Thermostatic valves; Solar thermal collectors

Heating installations, heating boilers, heating elements and structural parts therefor, heat cells sold as an integral part of condensing boilers; gas-water copper heat exchangers not being parts of machines; water-water stainless steel heat exchangers not being parts of machines; heat exchanger used for gas water heaters not being parts of machines, stainless steel plate heat exchangers not being parts of machines, thermostatic brass valves for heating installations

Heating installations, heating boilers, heating elements and structural parts therefor, heat cells sold as an integral part of condensing boilers; gas-water copper heat exchangers not being parts of machines; water-water stainless steel heat exchangers not being parts of machines; heat exchanger used for gas water heaters not being parts of machines, stainless steel plate heat exchangers not being parts of machines, thermostatic brass valves for heating installations

Heating installations, namely, heating boilers, heating elements and their parts, namely, gas-water heat exchangers, stainless steel plate heat exhangers and three-way valves for heating installations

Heating installations, namely, heating boilers and heating elements; Parts for heating systems, namely, gas-water and stainless steel plate heat exchangers not being parts of machines; Plumbing fittings, namely, three-way valves for heating installations