My wires and cables have factory inspection reports. Why do librarians insist that third-party testing reports are meaningful?

The market's acceptance of products, especially bulk commodities and building materials, has formed such subconscious and rules, which are obviously wrong and have no legal basis. As the name implies, the ex-factory inspection report means that the ex-factory products must be inspected to ensure that the products are qualified. From this basic connotation, we know that the factory inspection is usually the manufacturer's own inspection to ensure the qualification of his products, otherwise what does the manufacturer want the quality department to do? What do you need the test room for? A series of products you buy, such as mobile phones and home appliances, will be accompanied by quality certificates and quality certificates issued by manufacturers. Have you seen a few pages of reports in which city or province? Quality assurance and monitoring is also an indispensable system for a formal and mature enterprise, such as 3Q and 3C certification, and the final result is factory inspection and monitoring. The administrative authority exercised by the government quality supervision department is to supervise enterprises and products to ensure market order. Can ensure that countless batches of products delivered by countless enterprises in the market are qualified? Even if it has more testing authority, will the enterprise bear two or three thousand testing fees at a time? Unreasonable, illegal and unreasonable. In short, as far as the actual situation is concerned, the quality assurance of each batch of ex-factory inspection reports is far greater than that of a product report of the same specification issued by a quality supervision department for sampling inspection and inspection. How can he ensure that this batch of inspections is not inspected once in a while? Unfortunately, many Party A and acceptance units in the market are not aware of this, which is often caused by the subconscious of the third party and the more authoritative quality inspection of the government. Product quality can only depend on the enterprise, and others have the most supervisory role, except for special products. The enterprise is the first to apologize for the product quality accident. Who has seen a third-party testing agency for the first time? Like Kobe Steel and Mitsubishi Forgery! ! If you really want a third party, just make one or two copies for him, so that he can know that your enterprise is legally supervised and managed by the government. There is no need to make do with these people who don't want to know anything.