1, key state-owned enterprises. Large-scale backbone enterprises affiliated to the Central State-owned Assets Supervision and Administration Commission and their subsidiaries, research institutes and holding companies; Enterprises that belong to important national strategic industries, basic industries and key development industries (such as China Petroleum and Natural Gas Group Corporation, China Petrochemical Group Corporation, State Grid Corporation, Shanghai Baosteel Group Corporation, China State Construction Engineering Corporation, China FAW Group Corporation, China Ocean Shipping (Group) Corporation, China Mobile Communications Group Corporation, etc.). ) is in a leading position in important industries and fields and has an important impact on the development of industries and national economy.

2. Party and government organs and important institutions. Party and government organs at the central and local levels; Projects organized by local party and government departments at all levels, such as "Selected Graduates", "University Student Village Officer" and "Western Plan"; Important institutions directly under the party and government organs (such as Ministry of Industry and Information Technology, Ministry of Construction, Ministry of Transport, Ministry of Water Resources, Ministry of Land and Resources, Ministry of Public Security, Ministry of Foreign Affairs, General Office of the Central Committee, China Tobacco Corporation, Statistics Bureau, Meteorological Bureau, Oceanic Administration, national civil servants, etc.). ).