–

the GSB International e.V., Düsseldorf according to the "International Quality Guidelines for Coating of Components made of Aluminium (GSB AL 631), Steel and Hot-dip Galvanised Steel (GSB ST 663)" as well as according to the "International Quality Guidelines for Industrial Coating of Workpieces (IQC 654)" as test laboratory

–

Companies in the wind energy industry

–

Deutsche Bahn AG

–

Electricity operators and energy companies

–

companies in the paint and varnish industry and

–

several DIY -, retail - and consumer markets