The construction subjects of vocational skill level certificates and standards are: National Vocational Skill Standards Committee, vocational education and labor departments of all provinces, municipalities and autonomous regions, vocational schools, trade associations and enterprises.

1. National Vocational Skills Standards Committee: responsible for formulating, reviewing, revising and abolishing vocational skills standards, identifying vocational qualification grades and issuing vocational skills grade certificates.

2. Vocational education and labor departments of all provinces, municipalities and autonomous regions: responsible for organizing the implementation of vocational skill level appraisal and training, formulating and implementing relevant policies and measures, and implementing the responsibilities of management and supervision of vocational skill standard level appraisal.

3. Vocational schools: responsible for establishing and implementing vocational skill level certification, and providing relevant education and training.

4. Industry Association: responsible for organizing and coordinating the identification and evaluation of vocational skill levels in this industry, and formulating relevant work such as vocational skill standards in this industry.

5. Enterprise: responsible for providing employees with opportunities for vocational skill level certification, participating in the formulation of vocational skill standards, and improving employees' professional quality and skill level.