Enterprise qualification is the enterprise engaged in some kind of industry operation, should have the qualification and the quality level standard compatible with this qualification. Enterprise qualifications include the quality of personnel, technology and management level, engineering equipment, capital and efficiency, contracting ability and construction performance. Proof of enterprise qualification is often used, for example, for units, enterprises, engineering design, contracting, construction, decoration, construction, import and export, and other matters when signing agreements, contracts, should be mentioned, used. Engaged in administrative director, project supervision, quality inspection also need proof of qualification. Some special industries, the state has special requirements, such as the food industry, you need QS ("Quality Safety" Quality Safety) food production license, as well as making special equipment, audio-visual products, the state has special requirements, where proof of qualification is particularly important. It is also very important for individuals to have proof of qualification. For example, special proof of qualification is needed to engage in the work of physicians, pharmacy consultants, accountants, lawyers, psychological coaches, business negotiators, international investment consultants, and so on. Legal basis: Article 3 of the Provisions on the Administration of the Qualifications of Construction Enterprises stipulates that enterprises shall apply for the qualifications of construction enterprises in accordance with the conditions of their assets, main personnel, completed works and technical equipment, and after passing the examination and obtaining the qualification certificates of construction enterprises, they are allowed to engage in construction activities within the scope of the qualification license. Therefore, for some enterprises need to have the relevant qualifications before they can carry out legitimate business. Especially for the construction enterprise is more on the qualification need to pay attention to, because only after the legal qualification can undertake related construction projects.