Industrial land M refers to workshops, warehouses and ancillary facilities of industrial and mining enterprises, including special railways, docks and roads, excluding open-pit mines. According to the degree of industrial pollution to the environment, industrial land is divided into one, two and three categories, namely M 1, M2 and M3.
A3 land for education and scientific research refers to the land used by institutions of higher learning, secondary specialized schools, middle schools, primary schools and scientific research institutions, including the living land of students in independent colleges, namely A3 1, A32,? A33，A34，A35 .
2. Different prices: Because industry will cause certain pollution to the city, industrial land is usually concentrated on the edge of the city. Compared with the urban areas, the land rent is relatively low. According to the development layout of the city, some land is arranged in densely populated areas of the city. For example, primary and secondary schools, some are located in the suburbs of cities, such as colleges and universities, and the price of urban plots is very high.
3. The land use nature of construction land and industrial land is different: the state stipulates that land shall not be used in violation of the land use nature, that is, commercial activities shall not be engaged in industrial land;
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