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This post was last edited by yuchenchf on 2017-5-16 08:45. There are various methods for inspecting wire and cable products, and these can be classified into the following categories based on their inspection methods and purposes: 1. Classified by process stage: pre-inspection and in-process inspection； 2. Classified by inspection location: fixed inspection, mobile inspection, or also known as patrol inspection ； 3. Classified by inspectors: self-inspection, that is, inspection by the person in question, and specialized inspection ； 4. Classification by inspection quantity: routine inspection and sampling inspection ； 5. Another type is preventive inspection, which usually refers to first-article inspection and statistical inspection. First-article inspection refers to the quality check of the first unit produced. A statistical test is a method that utilizes the principles of mathematical statistics and probability to determine the quality of products as well as their trend of development, through the inspection and analysis of a certain number of products. 6. Factory inspection tests include routine tests, sampling tests, and type tests. The inspection of wires and cables follows a policy that combines \"quality control\" with \"prevention first\". The quality inspection of wire and cable products is not limited to merely checking the quality of the final products; it also involves assessing various factors that affect the quality of production at every stage of the manufacturing process, from the arrival of raw materials at the factory to the delivery of the finished products. Therefore, the scope and content of quality inspection are quite broad. Specifically, the quality inspection of wire and cable products can include the following aspects: 1. Quality inspection of the raw materials, auxiliary materials, and components related to the products used in their manufacture ； 2. Inspection of mechanical equipment used in the manufacture of wires and cables ； 3. Inspection of the tools, fixtures, molds, and process equipment used in the manufacturing of wires and cables ； 4. Supervision and inspection of the process flow structure cards for various stages of wire and cable manufacturing. 5. Testing of various formulations used in the manufacturing of wires and cables ； 6. Factory inspection of wires and cables after completion ； 7. Inspection of the production environment for wire and cable manufacturing ； 8. Inspection of measuring tools, weighing equipment, and instruments used in the manufacture of wires and cables.