The national vocational qualification certificate belongs to the national vocational qualification system. The post competency certificate is not a clear national system, but an internal system that enterprises and other units or industry organizations solve on their own.
Second, the professional qualification certificate:
1. A vocational qualification certificate is a proof that a worker has the necessary knowledge and skills to engage in a certain occupation. It is the qualification certificate for workers to apply for jobs, take up posts and start businesses, the main basis for employers to recruit workers, and the effective certificate for overseas employment and foreign labor cooperation personnel to notarize their skill level. Vocational qualification certificate is closely related to professional labor activities, reflecting the actual working standards and norms of specific occupations.
2. Vocational qualification certificate is an important part of the employment system and a special form of the national examination system. It refers to the objective, fair, scientific and standardized evaluation and appraisal of workers' skill level or vocational qualification through an appraisal institution recognized by the government in accordance with the vocational skill standards or qualification conditions formulated by the state, and the corresponding national vocational qualification certificates are issued to those who pass the examination.