Polluted air filtration systems include various components such as: dry filters with pneumatic or mechanical shaking of filter bags, pockets or inserts, wet filters with a system of purification and return of water with minimal water consumption, oil filters to separate oil vapors, gas washers, centrifugal fans of various sizes and designs, transport fans, workbenches for welding and cleaning workpieces with suction connections, movable suction arms for suction of welding gases together with mobile filter units, suction hoods, walls and pipelines, industrial vacuum cleaners for cleaning the working environment for feeding or operating filter systems. All products comply with ISO 9001: 2015, ISO 3834-2: 2005, EN 1090-1: 2009 and EN 13084-7: 2012.