The topic comes from:
(1) Required topic: Generally, it is assigned by the superior, and it will be completed within a time limit as a daily task.
(2) Normative topics: topics introduced by the quality control unit of the enterprise according to the development prospects in the work and construction planning of the enterprise center and the overall objectives of the strategic policy.
(3) Self-selected topics: topics that members of the QC working group find difficult problems in their lives by themselves and confirm after a unified understanding through group discussion.