1. Understand the working principle of the Chamber of Commerce and the procedures for changing the Chamber of Commerce: As a preparatory worker, you need to be familiar with the operating mode of the Chamber of Commerce, including its organizational structure, rules and procedures for changing its membership.

2. Have relevant professional knowledge and experience: For the change of chamber of commerce, you need to have certain knowledge and experience in management, organization and coordination.

3. Good communication and coordination skills: As a preparatory staff, you need to communicate and coordinate effectively with members of the Chamber of Commerce, candidates and relevant departments, so good communication and coordination skills are necessary.

4. Integrity and sense of responsibility: The reform of the Chamber of Commerce needs to maintain a high degree of integrity and sense of responsibility to ensure fairness, justice and transparency in the whole reform process.

Please note that according to the specific articles of association and policies of the Chamber of Commerce, the changes of the Chamber of Commerce may be different. The above conditions are for reference only. When applying for the qualification of preparatory personnel for the general election of the Chamber of Commerce, it is also necessary to know the specific requirements of the Chamber of Commerce in detail.