一. Sampling of Raw Materials
1. Sampling Inspection Ratio: Before the production of goods, raw materials undergo sampling inspection, with a sampling inspection ratio of 20% of the total.
2. Inspection Standards and Procedures:
(1) Detailed inspection standards and procedures are formulated in accordance with the quality standards of raw materials stipulated in the contract.
(2) The inspection items shall cover the physical properties, chemical composition, appearance quality and other aspects of raw materials.
3. Inspection Process:
(1) Upon the arrival of raw materials, the quality inspection personnel will conduct random sampling.
(2) Test the test indexes of the extracted samples and record the test results.
(3) Establish a comprehensive inspection report, which should incorporate the name, specifications, batches, inspection items, inspection results, judgment conclusions and other information of raw materials.
(4) Result Processing: Raw materials that pass the inspection are permitted to be stored and put into production.
(5) Raw materials that fail the inspection shall be identified and isolated. The raw material suppliers shall be notified promptly, and the materials shall be disposed of in accordance with the contract. Meanwhile, the causes of non-compliance are analyzed and corresponding improvement measures are adopted to prevent the recurrence of similar problems.

二. Sampling Inspection of the Production Process

1.  Supervision of the Process: Throughout the production process, quality inspection personnel are required to supervise and inspect the production process on a regular basis to guarantee that the production process complies with the process requirements and quality standards.  The inspection contents encompass the operating condition of the equipment, the control of process parameters, and the operation specifications of the operators.

2.  Sampling Inspection Ratio: 20% of the total quantity of semi-finished products produced should be sampled.

3.  Processing of Unqualified Semi-finished Products:

(1) Sort out the unqualified semi-finished products, mark them, and isolate them.  Analyze the specific manifestations of the problem, the location of occurrence, the scope of influence, etc.  The causes of nonconformity may involve the quality of raw materials, the setting of process parameters, equipment malfunctions, operator errors, etc.  Through the analysis of these reasons, identify the root cause of the problem and provide the basis for formulating improvement measures.

4.  Formulation of Improvement Measures:

(1) Develop corresponding improvement measures based on the quality problem points and cause analysis of unqualified semi-finished products.  The improvement measures should be targeted and operable, and be capable of effectively resolving existing problems and enhancing product quality.  The implementation of improvement measures should clarify the responsible person and time node to ensure that the measures can be implemented promptly and effectively.

(2) Track, verify and evaluate the effect of improvement measures.

三. Sampling Inspection Before Delivery

1.  Determine the Proportion of Sampling Inspection: Random inspection is conducted based on 20% of the total number of finished products.  This implies that for every 100 products manufactured, 20 need to be randomly selected for inspection.

2.  Comply with Customer Requirements: Verify whether the product and packaging meet the specific requirements of the customer, which might include the function, appearance, size and color of the product.

3.  Sort Out Unqualified Products: During the sampling process, unqualified products are sorted out, and these products are further inspected to determine the specific quality issues.

4.  Identify Quality Problem Points: For unqualified products, it is necessary to identify the specific causes of non-conformity, such as manufacturing defects, material problems or improper packaging.

5.  Solve Problems: Once quality problems are detected, timely measures should be taken to address them.  This may involve adjusting production lines, changing materials, re-training workers, etc.

6.  Record and Feedback: Record the sampling results and quality problems, and provide feedback to the relevant production team so that they can enhance the production process.

7.  Continuous Improvement: Based on the sampling results and quality problem analysis, continuously optimize the production process, reduce the number of unqualified products, and improve the overall product quality.

8.  Customer Communication: When significant quality problems are identified, communicate with customers promptly to ensure that they understand the situation and negotiate solutions.

Through these steps, it can be ensured that the product meets the quality standards before shipment, reduces customer complaints and returns, and maintains the company's reputation and customer relationships.