Subheading 320710: Pigments; Prepared Pigments, Opacifiers, Colours and Similar Preparations
Subheading 320720: Enamels and Glazes; Vitrifiable Enamels and Glazes, Engobes (Slips) and … etc.
Subheading 320730: Lustres; Liquid Lustres and Similar Preparations
Subheading 320740: Glass; Glass Frit and other Glass, in the Form of Powder, Granules or Flakes