40 Treatment of wood, including balsa wood, core materials, plywood and wava wood; processing of wood, including balsa wood, core materials, plywood and wava wood; applying finishes to wood, including balsa wood, core materials, plywood and wava wood; custom assembly of materials of wood, including balsa wood, core materials, plywood and wava wood for others; grinding, abrasion services; moulding services, contract moulding services; information, advisory and consultancy services concerning the foregoing; custom construction of sandwich constructions, core materials, core material kits, core material kits for wind turbine blades, recreational boats, yachts, commercial ships, ferries, navy vessels, cars, trucks, buses, trains, aircrafts, caravans, motorhomes, trailers, tidal energy turbines, radomes and nacelles; custom manufacturing of sandwich constructions, core materials, core material kits, core material kits for wind turbine blades, recreational boats, yachts, commercial ships, ferries, navy vessels, cars, trucks, buses, trains, aircrafts, caravans, motorhomes, trailers, tidal energy turbines, radomes and nacelles