The GWP Gesellschaft für Materialprüfung mbH is after
DIN EN ISO/IEC 17025:2018-03 accredited.

Among other things in the areas:
Metallographic investigations
Analytical investigations of plastics and fiber composites
Mechanical-technological investigations on plastics
Climatic tests, corrosion tests, light and weather fastness
color and gloss measurements
Determination of the burning behavior
Determination of odor behavior
Determination of the roughness, abrasion resistance, scratch resistance, stone chip resistance and abrasion resistance of surfaces