A prefabricated building is a building that is assembled on site using prefabricated parts. It has the advantages of fast construction speed, labor saving and improving project quality. Therefore, it is strongly supported by national policies and has become an important direction for the development of China's construction industry. At present, 20 provinces (regions) across the country have issued implementation opinions or planning plans for prefabricated buildings. Prefabricated buildings mainly include:
Steel structure buildings; wood structure buildings; concrete structure buildings and masonry structure buildings and other four types. Steel structure construction refers to the main load-bearing components for steel construction system, including steel frame and steel row two types of forms. Wooden structure refers to the timber as a load-bearing structure of housing buildings. Concrete structure buildings refer to buildings with walls or columns made of reinforced concrete, such as beam-plate houses, box houses, etc. Masonry structure refers to buildings made of masonry walls or pillars, such as hollow floors, filled walls, etc. Features of assembly buildings.

1. Green environmental protection. Green environmental protection is one of the important features of prefabricated buildings. On the one hand, it is reflected in the materials-due to the use of prefabricated components for on-site assembly, the discharge of construction waste on the construction site is greatly reduced; On the other hand, it is reflected in the impact on the environment-the size of the products produced through the standardized operation of the factory is accurately controllable and the quality is excellent and reliable, "zero" formaldehyde, "0" pollution, "0" radiation, "0", which meets the requirements of green environmental protection.

2. Seismic performance is good. Due to the use of light energy-saving materials and reasonable connection, the seismic performance of the whole house has been greatly improved.

3. Can be recycled. Most of the materials used in prefabricated buildings can be recycled or reused many times without affecting their performance and quality.

High degree of industrialization. Under the premise of ensuring product quality, it can realize large-scale production and manufacturing process automation, control and management information management level is higher.

5. Low cost. Compared with traditional cast-in-place, the cost of assembly is much lower.

6. Construction speed. Due to the use of a large number of advanced mechanical equipment and tools for construction operations to improve work efficiency.

7. Reduce artificial dependence. The use of mechanized operations instead of traditional manual labor greatly reduces the intensity and fatigue of workers.

8. Strong adaptability. According to different design requirements can be flexible to achieve a variety of functions.

9. Low maintenance cost. Due to the use of factory production and installation process, the cost of post-maintenance is greatly reduced.

10. Energy saving and environmental protection. Through scientific structural design, the utilization rate of building materials is the highest.

11. Long service life. Through scientific design, the service life of the product can reach decades or even hundreds of years.

12. Beautiful and fashionable. With the continuous improvement of people's living environment and the pursuit of quality of life, more and more consumers begin to pay attention to the beauty of housing.

13. Energy saving and emission reduction. Maximum economic benefits with minimum energy consumption.

14. Good applicability. According to the climatic conditions of different regions and the needs of users to design the corresponding house type.

15. Affordable. In the long run, it is more economical than the traditional building model.

16. Personalized customization. According to the different needs of customers.