WALLSTEIN

Heat exchangers, other than parts of machines; heat regenerators; air dryers, freeze dryers, blow dryers; purification installations for flue gas, exhaust gas, drawing-off air, sewage; installations for processing and recycling of oil, lubrication grease, sewage; installations for processing of drinking water and industrial water; installations for the disposal of pollutants; refrigerating installations; clean room installations.

Maintenance and cleaning of machines and installations; construction of pipelines.