DIN EN ISO 4628-7 : 2016 Title: Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 7: Assessment of degree of chalking by velvet method (ISO 4628-7:2016) Year: 2016 Publisher: DIN Media GmbH Availability: Within 1-2 working days