Explanatory notes
… heading include : (1) Oil varnishes in which the film-producing agent is a drying oil (e.g., linseed oil) or a … dispersions of lac, natural gums or resins (shellac, copal, rosin, damar, etc.) in alcohol (spirit varnishes), gum, wood … etc. (3) Varnishes based on bitumen, pitch or similar products (sometimes known as black japans, black varnishes, …