The "three non-principles" for post implementation in quality supervision are: not accepting defective products; Do not manufacture defective products; No defective products will flow out.

1. We are the first person not to accept defective products, that is, the products that flowed to us in the last process. We should check whether there are any defects, and if there are any, we should not accept them. We should ensure that everything given to us by our company is good, and if there are any problems, we should return them and not accept them.

2. The second one doesn't make defective products, and he can't produce defects in the production process, and he won't make defective products.

3. Third, no defective products will flow out. After the production is finished here, the defective products must not be allowed to flow to the following companies. If there are defects in the defective products after the production inspection, they should be repaired by themselves and cannot be revealed.