The company has formulated a complete set of regulations and management systems, implemented institutionalized management, implemented at various levels, and organized. In view of the actual situation of printed products, a method of self-inspection and random inspection is adopted to strictly control product quality. In production, each employee is both a production worker and an inspector, preventing semi-finished products with quality problems from flowing into the next process. In addition, the company has full-time inspectors to conduct random inspections on all aspects of raw material purchase, production, and finished product sales to ensure the qualified rate of finished products. The method of workshop self-inspection and company sampling inspection has effectively improved the company's product qualification rate.