According to the relevant information inquiry: Yes, adults can apply for a credit card as long as they do not break their trust. Requirements for party membership:

1. Chinese citizens over 18 years old. Only after a person reaches adulthood can he have a relatively certain political judgment and establish his own political beliefs and lifelong aspirations. To join the Communist Party of China, workers, farmers, soldiers, intellectuals and other advanced elements from other social classes must have Chinese nationality. Those who apply to join the party must be over 18 years old and must submit a written application for party membership to the party organization.

2. Recognize the party’s program and charter. "Recognition" is not only verbal support and acceptance, but more importantly, actions to realize the party's program, implement the party's charter, and be determined to fight for communism for life.

3. Be willing to join a party organization and work actively in it. Only when all party members participate in a party organization and work actively can we ensure a high degree of unity in ideology, politics, and actions of the entire party, and only then can the party have combat effectiveness.

4. Be willing to implement the party’s resolutions. The party's resolutions represent the will of the entire party and must be implemented. If each party member can do his own thing, the party's unity and unity will be destroyed, and the party will have no fighting capacity.

5. Pay party dues on time. This is the obligation of every party member and a manifestation of party members' concern for the party's cause and organizational concepts.