Isaac Kremer/ September 9, 2018/ / 0 comments
A ray of light, as ultraviolet, that produces photochemical effects, as the yellowing, chalking, and disintegration of paint coatings. (Ching, 1995)
Your email address will not be published. Required fields are marked *
Δ
This site uses Akismet to reduce spam. Learn how your comment data is processed.