Mid-Production Inspection (DPI): a key link in building quality defense

• Confirms that production processes are organized and progressing according to plan, ensuring that production activities are carried out in an orderly manner to avoid production chaos.

• Check whether the quantity of semi-finished products, finished products and packaged products meet the requirements, real-time grasp of the production progress and inventory status, to provide a basis for the adjustment of the production plan.

• Evaluate estimated capacity and order fulfillment dates to ensure that production schedules can meet delivery deadlines and avoid losses to the business due to production delays.

• Verify that product quantity, color, style and construction meet specifications and ensure that basic product attributes meet customer needs and quality standards.

• Verify that text spelling, font, size, location and overall design are up to standard, focus on quality control of product details and improve the overall quality of the product.

• Check that main labels, wash labels, size labels and product labels are correctly and securely affixed. These markings are important carriers of product information, and ensuring their accuracy and robustness is critical to the sale and use of the product.

• Measure the product dimensions and accurately match them with the specifications to ensure that the dimensions of the product meet the design standards and to avoid the use of the product function and assembly precision being affected by dimensional problems.

• Perform other product-specific inspections to validate process quality and thoroughly evaluate product quality from multiple perspectives to ensure that the product process meets requirements.

• Check whether the single product packaging, inner packaging and outer packaging are in line with the norms. Good packaging not only protects the product from damage during transportation and storage, but also enhances the product's market image.

• Check whether the size and weight of export cartons meet the transportation requirements to ensure that the products can reach their destinations safely and smoothly during transportation and reduce the transportation risks.

• Verify whether the transportation marking on the carton is labeled correctly. Clear and accurate transportation marking helps the smooth operation of the logistics link and avoids transportation errors caused by wrong marking.

II. Importance of mid-production inspection

1. Key points for quality control

• Preventing batch failures: Intercept defects during the production process, avoiding the accumulation of nonconforming products leading to large-scale rework and reducing costs (e.g., the cost of rework at a later stage is 10-100 times higher than that of interim inspection).
• Stable process level: Optimize production parameters and improve process stability through continuous inspection data statistics.

2. Cost and efficiency optimization

• Reduce waste: timely detection of material loss, equipment abnormalities and other issues, to avoid the waste of raw materials and man-hours.
• Shorten the delivery time: Avoid the delivery delay caused by large-scale rectification at the later stage, and ensure that the order is delivered on time.

3. Customer trust and market competitiveness

• Meet customer requirements: meet customers' stringent standards for product quality and avoid claims or lost orders due to quality issues.
• Brand reputation maintenance: Enhance customer satisfaction and market competitiveness through stable quality performance.

4. Data-driven continuous improvement

• Accumulation of quality data: Record the inspection results of each batch to form a quality trend analysis (e.g., frequent defects, process weaknesses), which provides a basis for subsequent product design and process optimization.

Mid-production inspection (DPI) is the "middle line of defense" for quality control in manufacturing industry, which realizes the goal of "prevention-oriented and continuous improvement" through dynamic monitoring of the production process. Its main point is to accurately locate the inspection nodes, covering the full dimension of quality elements, while the importance is reflected in cost control, quality assurance and enterprise competitiveness enhancement and other levels. In practical application, it is necessary to integrate DPI into the whole process quality management system to maximize its value, taking into account the characteristics of the enterprise's own process and customer needs.