The QIB quality mark is aimed at industrial companies involved in coating aluminium, steel and galvanised steel using powder coating, cathodic dip painting and liquid coating methods. Our inspectors check that member companies meet the relevant functional and technical requirements. Production plants, processes, the documentation of key production data and the level of product quality achieved are all inspected in accordance with the requirements. As part of these quality checks, our inspectors not only review the comprehensive programme of self-auditing and documentation measures, they also take sample sheets and subject them to the prescribed corrosion tests in the IFO Institute laboratory.