China (Changsha) International prefabricated architecture and Engineering Technology Expo (hereinafter referred to as the Expo) has been successfully held for four times, with a total exhibition area of more than 200000 square meters. Nearly 280000 delegates from 63 countries and regions and 31 provinces, cities and autonomous regions in China participated in the Expo, with a total contract value of more than 80 billion yuan. It has achieved remarkable results, formed a good atmosphere of green development in the whole province, and built a solid foundation in the whole country This paper analyzes the brand influence of the "Construction Expo". It has won a series of honors such as "China brand exhibition Gold Award", "China City excellent exhibition project award" and "industry exhibition with the most brand value".

With the theme of "practicing three high and four new, building a green future", the 2021 Construction Expo will hold the "world construction industry conference" at the same time. The Expo will comprehensively display the achievements of urban and rural housing construction and the outstanding achievements of "beautiful Changsha" urban construction during the 13th Five Year Plan period, focus on displaying new concepts, new technologies and new products of urban and rural housing construction, speed up the transformation of construction methods and technological innovation, promote the coordinated development of intelligent construction and construction industrialization, deepen industrial exchanges and cooperation, and provide a platform for the realization of "building central exhibition center" We should strive to build a modern new Hunan, speed up the domestic circulation and domestic and international double circulation in the field of housing construction, and strive to create a new situation of high-quality development of Housing Urban and rural construction.

1、 Achievements exhibition of housing and urban rural construction
The achievements of national prefabricated building demonstration city and excellent green building city, the achievements of housing and Urban-Rural Construction in Hunan, the achievements of industrial park construction and investment promotion.

2、 Intelligent construction and building industrialization
1. Prefabricated building exhibition area: national and provincial prefabricated building industry base and industry leading enterprises; prefabricated precast concrete structure, steel structure, wood structure technology system, demonstration projects; prefabricated parts, etc;
2. Assembly decoration exhibition area: standardized design, factory production, intelligent construction and other upstream and downstream industrial chain enterprises and service institutions;
3. Intelligent construction and manufacturing equipment exhibition area: industrial robots, construction robots, intelligent construction machinery, 3D printing, prefabricated component production and transportation equipment, construction industry internet platform, intelligent construction integrated solutions, etc;
4. Assembly mechanical and electrical exhibition area: water heating and electrical installation mechanical and electrical technology enterprises and service institutions, etc;
5. International architectural achievement exhibition area: display the latest international architectural technology, innovative products and excellent cases.

3、 Comprehensive display of urban and rural construction
1. Quality real estate exhibition area: excellent real estate enterprises with future leading projects, ecological healthy housing and quality cultural tourism, health care, commercial projects, relevant service agencies, etc;
2. Architectural design and consulting exhibition area: all kinds of architectural design units, BIM, engineering consulting, design software, engineering management software, data processing system, architectural product application scenarios, engineering panoramic platform, landscape design, etc;
3. Construction exhibition area: EPC, green construction unit, smart construction site, supervision platform, quality inspection, site environmental protection, construction safety, construction technology and equipment, etc;
4. New infrastructure exhibition area: 5g infrastructure, cloud computing and big data, artificial intelligence, intelligent communication system, Internet of things, smart city, industrial Internet, etc.

4、 Smart home, smart property and Smart Life
1. Smart home exhibition area: overall smart home, smart panel / socket, smart sleep and health monitoring, smart security protection, smart door lock, anti-theft alarm system, smart entertainment products, smart life technology, etc;
2. Intelligent property and intelligent building exhibition area: excellent property management organization, management software, service platform, intelligent building control, energy saving management, intelligent security, public broadcasting, intelligent shading, intelligent parking, charging pile, intelligent lighting, intelligent self-service facilities, community infrastructure, etc;
3. Smart Life Exhibition Area: smart government, smart medical, smart transportation, smart community, smart home appliances, smart office, smart social networking, 5g life experience, VR live experience, intelligent robot, driverless, virtual world ecosystem, immersive life experience scene, etc.

5、 New green building materials and others
1. New green building materials: wall materials and thermal insulation and energy-saving technology products, roof system and building waterproof, building coating, energy-saving doors and windows curtain wall, building shading, HVAC and air purification, building new energy system, building environment system, building water-saving and energy-saving, green energy-saving lighting, etc
2. Comprehensive display: green building demonstration, comprehensive pipe gallery, smart city, sponge City, passive low energy consumption building, building energy saving transformation, green building consulting, energy efficiency evaluation, urban and rural environmental health treatment technology products, facilities and equipment, financial services, Internet services, etc.

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