Seal of approval
Nießing has carried the "Sicher mit System" ("Systematic Safety") seal of approval from the Occupational Health and Safety Management System (AMS) since the end of 2013. The Issuer is the Trade Association for Wood and Metal
Nießing has been certified by TÜV NORD 2015 as a manufacturer of pressure equipment.
according to DIN EN ISO 9001:2015; the scope of application: sales, development, production, and assembly of exhaust and sound insulation systems, stainless steel/metal construction
Welding specialist company
According to DIN EN 1090-1 Specialist welding company. TÜV Nord according to DIN EN 1090-1 for load-bearing components and kits for steel structures up to EXC3 according to EN 1090-2