according to the official website of Dior, the English name of Dior is ChristianDior for short, and the trademark of cd is Dior.

DIOR Dior, founded by French fashion designer ChristianDior in 1946, keeps innovating its brand design, but always maintains its noble and elegant style, showing its charm, confidence and vitality. In the fields of fashion, jewelry and watches, perfume, make-up and skin care, Dior is the perfect presentation of elegance, Excellence and luxury.