Legal analysis: The subsidiary company and the parent company are two different companies, and there is no affiliation between them. If the parent company allows the subsidiary company to use its registered trademark, it complies with legal regulations. Trademarks are used by producers and operators of goods on the goods they produce, manufacture, process, select or distribute, or by service providers on the services they provide. They are used to distinguish the source of goods or services and consist of words, graphics , letters, numbers, three-dimensional logos, sounds, color combinations, or a combination of the above elements, a logo with distinctive characteristics. Trademarks approved and registered by the state are "registered trademarks" and are protected by law. The trademark registrant can license others to use them for remuneration.

Legal basis: Article 26 of the "Trademark Law of the People's Republic of China" If a trademark is used for the first time on goods exhibited at an international exhibition sponsored or recognized by the Chinese government, the goods shall be Within six months from the date of exhibition, the applicant for registration of the trademark can enjoy priority. Those who claim priority in accordance with the preceding paragraph shall submit a written statement when applying for trademark registration, and submit within three months the name of the exhibition where the goods are exhibited, evidence of the use of the trademark on the goods on display, and the date of exhibition. and other supporting documents; if a written statement is not made or supporting documents are not submitted within the time limit, it will be deemed that priority has not been claimed.