1. Definition of prefabricated building
Prefabricated building is a new large-scale building system that integrates and integrates building components to provide the market with the most comprehensive products. Prefabricated building is not only an integration of building components and structural parts, but also an optimized integrated product that integrates optimal design solutions, advanced production management methods, and excellent performance materials and equipment. Under the background of residential industrialization, it is a building product that optimizes the combination of the structure of the building and its supporting facilities and services, thereby providing users with a low-carbon, efficient, and comfortable building environment. Its specific manifestations are production factoryization, parts standardization, construction and assembly, supply series, service customization, and overall sustainability.
The integration or assembly method of the house is to change the traditional construction methods due to the disadvantages of high construction labor intensity, low production efficiency and large resource consumption, and strive to improve the industrialization level of residential production. Most prefabricated building systems have only the main components and some large components produced in the factory, and a considerable part of the construction operations such as interior and exterior finishing works, water and electricity installation works, and interior decoration are completed on site (box-type houses and slab housing systems Part of the internal and external finishing operations can be completed in the factory), the overall industrialization is not high. The focus of prefabricated buildings is to improve residential comfort, production efficiency and product quality. Not only large-scale structural parts are produced in the factory, but most of the structural parts are also processed in the factory. Even the hydropower pipelines are cut into general parts in the factory in advance. At the construction site, all the structural parts need only be installed as shown in the drawings. You can build a house.

2. Development of prefabricated buildings
Prefabricated houses can, to a certain extent, overcome the problems of short life, high energy consumption, serious quality problems, and waste of secondary decoration. The contradiction between the scarcity of land resources in China and the sustainable and rapid development of the national economy determines that housing must have the inevitability of sustainable development. Only sustainable housing can have the sustainable development of the national economy. The development of new integrated housing has made this contradiction a harmonious development. Integrated housing started late in China, and its development is relatively backward. In the process of development, it still needs to learn from foreign advanced concepts and experiences to digest and absorb it.
At the same time, China's central government has vigorously promoted prefabricated buildings since 2015. Large cities in China are required to have more than 50% of prefabricated buildings nationwide before 2020. Since 2015, Jiangsu Province has become the key area for the fastest promotion of prefabricated buildings in the country, the largest promotion area and the largest government subsidy. This is also an important factor in the use of prefabricated buildings in future new projects.