First of all, the institutions are different. For the institutions that do such testing, the reporting fees issued by SGS, ITS, and TUV are definitely higher. Apart from them, they are reports issued by some domestic institutions. Relatively speaking, they have to offer a lot of discounts. In addition to the customer's designated SGS, in fact, many companies still do a lot of domestic third-party laboratories report, because the price concessions, practicality is still possible now, followed by different detection methods, divided into: 1. Single Group test, 2. and the whole machine, 3. there is integration,

Single group test: Most of them are done by component suppliers. The main difference is that the product is metal or not metal. If the semi-finished product is used for this, it can be done if the finished product is single-group test. Calculate the number of materials in the product, put it on the test instrument for testing. If it is found that the part can't pass, it will be taken out separately and then tested separately according to the method of single group test. Integration: The most done on the market should be done now. It is the integration, the finished product is integrated, it is necessary to provide a list of materials, then ask the raw material supplier to request the test report of the raw materials, find the test report of each component, and submit it to the certification company for a certificate report for your finished product. In fact, the product is not tested, it is a summary of the product report, finishing a finished product.