GB/T 30789.9-2014 standard english preview version PDF file download
GB Standard Code
GB/T 30789.9-2014
Standard Category
China National Standards
GB Standard English 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 9: Assessment of degree of filiform corrosion
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