The surface of titanium metal is covered with a very thin naturally generated oxide film (titanium and oxide TiO₂). This film is like a magical “color magician”. When light shines on it, the film plays the role of a prism, refracting and absorbing light of different wavelengths, so that we can see rich and diverse colors. Moreover, if the thickness of this oxide film is adjusted to angstroms (10⁻⁸cm) by artificial means, thousands of similar colors can be presented according to the difference in wavelength. It is worth mentioning that no pigment is added in the coloring process of the titanium cup. It is completely the color of titanium itself under special technology. Since the melting point of titanium is similar to that of platinum, after being processed by special technology, the surface of the titanium cup can produce different colors at different high temperatures, and the more sophisticated the technology, the purer the color. The application of this technology enables the colorful titanium cup to achieve the characteristics of no paint loss (it is not paint itself) and more durable without using chemical coatings. Common colors of titanium cups on the market include sky blue, rock black, earth brown, ivory white, Berlin blue, space gray, mineral gold, deep sea blue, champagne gold, etc., each color has its own unique charm.
