**No**. The horizontal trademark registration application has been approved, but it cannot be used vertically. This is because the registration of trademark characters is three-dimensional, with a fixed arrangement from left to right and top to bottom. If the trademark text is used vertically, it violates the arrangement of the trademark registration and may affect the legality of the trademark.

According to Article 49 of the Trademark Law, if a trademark registrant changes the registered trademark, the name of the registrant, the address or other registration matters during the process of trademark registration, the local industrial and commercial administration department shall order Corrections are required within a time limit; if corrections are not made within the time limit, the Trademark Office will revoke the registered trademark. Therefore, if the trademark registration has not been changed, a horizontal trademark cannot be used vertically.