According to the provisions of the Trademark Law: 1. If a registered trademark needs to change its logo, it shall re-apply for registration. 2. However, separately registered trademarks can be used in combination. If Chinese and English are registered separately at the time of registration (that is, two trademarks are registered and two trademark registration certificates are available), they can be used separately; If Chinese and English are registered together at the time of registration (that is, one trademark is registered and only one trademark registration certificate), they cannot be used separately.