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I. QC and QA: QC stands for Quality Control, which refers to the inspection of product quality, as well as the analysis of quality issues, efforts to improve them, and the management of defective products; it is an umbrella term for the personnel involved in these tasks. IQC: It refers to quality control of incoming materials. IPQC: Process quality control. FQC: Final product quality inspection. OQC: Inspection of finished products before they leave the factory. DQC: Design quality control. MQC: In-process product inspection. QA: Quality Assurance – ensuring that product quality is satisfactory by establishing and maintaining a quality management system. IDQA: Design Quality Assurance; QE: Quality Engineer; JQE: Client Quality Engineer; SQE: Supplier Quality Engineer. II. Differences between QC and QA The main difference between QC and QA is that the former ensures that product quality meets specified standards, while the latter establishes systems and ensures that these systems operate as required in order to gain trust from both internal and external parties. QCQC mainly involves post-event quality inspection activities; errors are tolerated by default, with the aim of identifying and selecting them out. QA mainly refers to pre-existing quality assurance activities that focus on prevention in order to reduce the likelihood of errors occurring. The scope of QC control is mainly within the factory, and its purpose is to prevent defective products from being fed into production, moving to the next stage of processing, or leaving the factory, ensuring that products meet quality requirements and that only qualified products are delivered to customers. QAQA is primarily aimed at providing assurance; therefore, it is necessary to manage the entire process from understanding customer requirements to after-sales service. This requires companies to establish a quality management system, develop relevant documents to standardize the activities in each stage, and keep evidence of these activities in order to build trust. This trust can be divided into two types: external and internal. The external type refers to the customer’s confidence that the factory will produce and deliver products in accordance with their requirements ； Internally, this is done to reassure factory owners, as they are the primary holders of responsibility for product quality; they bear full responsibility in case of any quality issues. This is also a key requirement in the quality control laws enacted by various countries, aimed at ensuring that companies truly prioritize quality. Therefore, to avoid taking on quality-related responsibilities, owners must regulate all activities through documentation and keep evidence of them. However, it is impossible for the boss to know whether the people inside the factory are following the requirements outlined in the documents; therefore, QA is needed to carry out audits on their behalf to determine whether those requirements are being met. This allows the boss to be assured that all activities in the factory are conducted in accordance with the documented procedures, thus giving him peace of mind. III. Similarities between QC and QA: Both QC and QA involve verification. QC tests products against standards to determine whether they meet the specified requirements, while QA conducts internal audits to verify that the system’s operations comply with standard requirements. QA also carries out shipment inspections and reliability tests to ensure that products have gone through all necessary procedures and can satisfy the specified requirements, thus guaranteeing that the products delivered by the factory are of qualified quality and in compliance with relevant regulations. To use an inappropriate analogy, QC is like the police, while QA is like the judge. QC is only responsible for arresting those who violate the law; they cannot prevent others from committing crimes or pass final judgments on them. On the other hand, the judge is responsible for creating laws to prevent crime and issuing judgments based on those laws. IV. IPQC and IQC: There is a distinction between IPQC and IQC. IPQC: IN PROCESS QUALITY CONTROL – Quality control during the production process. IQC: INCOMING QUALITY CONTROL – Quality control of raw materials before they are used in production. Responsibilities of IPQC: 1. Inspect products during the production process and keep records of these inspections. 2. Fill out inspection reports based on the inspection records. 3. Propose solutions to address any issues identified during inspections. Responsibilities of IQC: 1. Inspect raw materials strictly in accordance with established standards. 2. Fill out inspection records accurately. 3. Maintain and service inspection equipment. 4. Report any abnormalities in raw materials. 5. Ensure that raw materials are properly labeled. 6. Be responsible for signing off on inspection reports submitted by warehouse staff. 7. Address quality issues related to materials reported from the production line by re-inspecting the materials stored in the warehouse. QA refers to quality supervision/monitoring: 1. Be responsible for overall operations within the department, implement GMP-related quality management regulations, and provide suggestions to company management regarding product quality from time to time. 2. Ensure that the company’s products are manufactured in compliance with GMP requirements. 3. Bear the responsibility for supervising, implementing, correcting, and preventing matters and people related to quality across the entire enterprise. 4. Instructions that are conducive to production allocation are reviewed and approved after being examined and signed by the designated personnel in the department. 5. Review and approve the test results. 6. Review the pilot test plans and conclusions for new product development and process improvement. 7. Review and submit the relevant technical and quality documentation to the drug regulatory authorities. 8. Review the approval records to determine whether the finished product can be released from the factory. 9. Responsible for organizing the formulation of quality standards and other documents for raw materials, auxiliary materials, and packaging materials. 10. Procedure for handling non-conforming products. 11. To meet quality management requirements, collaborate with relevant departments to develop new technical standards or discuss amendments to existing ones. 12. Review the production process procedures and batch production records as well as batch packaging records for each product, and decide on the release of the finished products. 13. Address product quality issues related to customer complaints by assigning personnel or visiting the customers in person. Internal meetings are held to discuss improvements regarding quality issues in collaboration with relevant departments, and written reports on complaints and their resolutions are submitted to the company’s management. 14. Conduct comprehensive GMP inspections of the enterprise on a regular basis (at least once a year) in conjunction with the Chief Engineer’s office and the Production Department, and report the results of these inspections to the enterprise’s management in a timely manner. In short, no matter what position one is assigned to, it is necessary to have a serious attitude; only in this way can the tasks be completed well. No job or work environment is perfect, but every job offers many valuable experiences and resources that will become assets in our lives