The first is the transfer of products, which may include trademarks, patents and so on; Then there is the quality system, and the transfer of the whole system means that even the manufacturers are transferred together, that is to say, the production enterprises of products are directly changed into legal persons, and everything else remains unchanged. These unchangeable things include factory name, department responsibilities, main suppliers, production technology, testing methods and means, work instructions, key personnel and so on. This is the so-called transfer quality system. In this way, it is not a problem of transferring 3C certificates, but a problem of transferring the whole enterprise, which is likely to be a problem in the field of assets or economy. 3C certification is the abbreviation of compulsory product certification in China, and it is a compulsory license for the safety of specific products. The main features of 3C certification are that the state issues a unified catalogue, determines the unified applicable national standards, technical rules and implementation procedures, formulates unified signs and signs, and stipulates unified charging standards. All products listed in the compulsory product certification catalogue must be certified by a certification body designated by the state, and can only be used in factories, imports, sales and specific business service places after obtaining relevant certificates and applying certification marks.