Overglaze color: Decorative paper made of pigments is attached to the glaze surface or pigments are directly painted on the surface of the product, and then fired at low temperature. The decorative pattern cannot sink into the glaze, and there is a concave-convex feeling when touched.

Underglaze color: All decorations are applied to the biscuit (unglazed ceramic body) before glazing, and then fired at high temperature in a single firing. The decorative pattern is covered by the glaze layer, making it shiny, smooth, and with a smooth touch.

In-glaze color: The firing temperature allows the glaze material to melt, sinking the pigments into the glaze. After cooling, the pigments are covered by the glaze layer, resulting in a smooth surface with no significant concave-convex feeling when touched.