Yes, only the trademarks stipulated in the national trademark law must be registered for sale, and products in other industries can be sold without registered trademarks.

Trademark registration needs to follow the following principles:

1. The principle of combining voluntary registration and compulsory registration. Most trademarks in my country adopt the principle of voluntary registration. Producers and operators of goods that require the use of registered trademarks under national laws and administrative regulations (mainly cigarettes, cigars, and packaged cut tobacco) must apply for trademark registration. Without approved registration, the goods shall not be sold in the market.

2. Principle of prominence. The trademark applied for registration shall have distinctive features and be easy to identify, and shall not conflict with the legal rights previously obtained by others (such as design patent rights, name rights, and copyrights).

3. Principle of trademark legality. The trademark applied for registration shall not use signs prohibited by law. Registered trademarks using place names will continue to be valid. Without authorization, an agent or representative registers the trademark of the principal or represented person in his or her own name. If the principal or represented person raises an objection, the registration shall not be granted and use shall be prohibited. If a trademark contains a geographical indication of a product, but the trademark does not originate from the area indicated by the trademark, and it misleads the public, it will not be registered and its use will be prohibited; however, registration that has been obtained in good faith will continue to be valid.

4. When reviewing and announcing trademark registration applications, adhere to the principle of first-to-file and first-to-use. If two or more trademark registration applicants apply for registration of the same or similar trademark on the same or similar goods, the trademark that was applied for first will be preliminarily reviewed and announced; if the application is made on the same day, the trademark that was applied for first will be preliminarily reviewed and announced. If you use an earlier trademark, other people’s applications will be rejected and no announcement will be made.

5. Principle of prohibition of trademark squatting. When applying for trademark registration, you must not use unfair means to preemptively register a trademark that is already used by others and has certain influence.