ISO 9001 is one of the core standards of quality management systems contained within the ISO 9000 family of standards. The concept of the ISO 9000 family of standards was put forward by the International Organization for Standardization (ISO) in 1994, referring to international standards formulated by ISO/TC 176 (Technical Committee for Quality Management and Quality Assurance of the International Organization for Standardization). ISO 9001 is used to demonstrate an organization’s ability to provide products that meet customer requirements and applicable regulatory requirements, with the objective of enhancing customer satisfaction. Against the backdrop of continuous expansion and growing internationalization of commodity economies, this third-party certification, independent of the economic interests of producers and distributors, is impartial and scientific. It helps enhance product reputation, reduce duplicate inspections, mitigate and eliminate technical barriers to trade, and safeguard the rights and interests of producers, distributors, users and consumers. It serves as a passport for countries to conduct quality evaluation and supervision on products and enterprises, acts as the basis for customers to audit suppliers’ quality management systems, and verifies enterprises’ capability to meet the technical requirements of ordered products. Enterprises that have obtained certification have met international standards in the integration of various management systems, proving that they can consistently and stably supply expected, satisfactory and qualified products to customers. From the perspective of consumers, certified companies adopt a customer-centric approach, satisfy customer demands, achieve customer satisfaction and refrain from misleading consumers. Driven by the needs of international trade development and challenges emerging during standard implementation, especially the rising proportion of the service industry in the global economy, this standard incorporates advanced international quality management concepts and adopts the PDCA cycle philosophy of quality management, making it highly practical and instructive for both suppliers and purchasers of products and services. Upon its release, the standard gained widespread acceptance across the globe. So far, more than 70 countries have directly adopted it or converted it into equivalent national standards, and over 50 countries have established quality system certification/registration bodies, triggering a global upsurge in standard implementation and certification. Worldwide, hundreds of thousands of factories, enterprises, government institutions, service organizations and other entities have implemented ISO 9000 and obtained third-party certification. The ISO 9001:2015 version was officially released in September 2015. This major revision incorporates changes developed based on feedback from global users and experts.