Consulting and planning in the field of gravel, concrete and residual concrete processing, in particular also planning for the conversion of concrete and gravel plants; Sale of machines in the field of gravel, concrete and residual concrete processing (sieves/crushers/conveyor belts/belt dosing devices, etc.); Water treatment in gravel and concrete manufacturing (clarification plants for sludge water from gravel production, residual concrete processing from concrete production); Production and delivery of spare and wear parts for conversions and repairs; Trade in used machines as well as assembly and disassembly of new and used machines.