Hello, dear, thank you for your attention to Duke Zhou's century-old wine. "Duke Zhou's century-old wine" is 33 legal trademarks registered by our company in the State Trademark Office. At the same time, our company also has trademarks such as "Duke of Zhou Centennial Health Wine" and "Duke of Zhou Centennial Wine from the 23rd year of Daoguang", and other manufacturers are not authorized to produce it. Our origin is Beijing. Duke Zhou's century-old health wine wishes you good health!