8691040000

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8691040000 (also known as 8691) is an application field and working principle program developed by the Chinese Academy of Sciences (CAS). It is the base of the "National 4-Digit Classification of Statistics" and its purpose is to provide a unified set of data and information classification for various applications. Through 8691040000, practitioners can better organize the statistical data and information used in their research and analysis.

The 8691040000 consists of four main types, namely the first-level (A-level), second-level (B-level), third-level (C-level), and fourth-level (D-level). Each level contains 18-19 sub-categories. The first level of 8691040000 is based on technology, industrial policy, industry, basic business, law and regulation, customs, environment, and water conservancy. The second-level structure provides additional specifications for industry-specific technologies, industrial policy, industry, and basic business. The third-level categorizes basic business activities, and the fourth-level breaks these activities into very precise sub-codes. For example, a third-level code may be "manufacturing of office equipment", while the fourth-level specifies discrete activities, such as manufacturing of keyboards, calculators, copiers, etc.

8691040000 works in two ways: it classifies the targets of research, suggesting what type of object should be classified, and it is a tool for data reporting. For research, 8691040000 provides the basic descriptors of subjects and fields of study, enabling researchers to accurately define and categorize their research targets, subjects, and indicators. For data reporting, 8691040000 provides systematic and standardized ways for reporting data on a variety of topics, allowing government and business organizations to easily compare data compiled from different sources.

In conclusion, 8691040000 is a useful and comprehensive application field and working principle application used to classify data and information about various topics. Its ability to classify by layers of detail allows for accurate and objective comparison of data from different sources. It is a powerful tool for government body and business organizations, providing an easy and unified way to organize and compare information.

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