The Lankao County of Kaifeng City and Fengqiu County of Xinxiang City in Henan Province starts from Lankao County, crosses the Yellow River to the west, and ends in Fengqiu County, with a total length of 30.263 km. The main line of the project adopts the expressway standards with six lanes in two directions, a subgrade width of 34.5 m, a design speed of 120 km/h. The Yellow River Bridge is as long as 9.104 km.
The maximum height of the main tower of the Yellow River Bridge is 160.5 m, with high spatial positioning accuracy and difficult line-type control. The foundation pile adopts the pile foundation with super depth and super large diameter (as deep as 106 m). The generous amount of concrete construction underwater tests STECs delicacy management. The subbridge superstructure of the Yellow River Bridge in this project adopts the whole hole erection of 100-m span steel concrete composite beam. This technology is another innovative breakthrough after the whole hole erection process of 80-m span steel beam of Mengzhou Yellow River Bridge in China. It will form a new achievement in bridge equipment research and development and installation technology.
The project serves as a key construction project of “13445” expressway engineering in Henan Province. Upon its completion, the project is of great significance for China to facilitate the strategy of the rise of central China, accelerate the development in "Central Henan Urban Agglomeration", promote the Zhengzhou metropolitan area, and advance the high-quality development in the Yellow River Basin.

Anyang-Luoshan Expressway is one of the 16 north-south vertical channels in the Henan Province Expressway Network Planning (2021-2035), connecting 9 cities and 16 counties in Henan Province. Upon its completion, the project will form a new vertical channel between the Beijing-Hong Kong-Macao Expressway and the Daqing-Guangzhou Expressway. It will connect the Beijing-Tianjin-Hebei urban agglomeration and Xiongan New Area in the north and the urban agglomeration in the middle reaches of the Yangtze River in the south. The project is of great significance for China to further strengthen inter-regional economic integration and relieve the traffic pressure on the Beijing-Hong Kong-Macao Expressway.
Covering a total length of 38.9 km, Bid SG-4 of the Yuan-Hebei provincial boundary to Yuanyang section (Lankao-Yuanyang Expressway) of the Anyang-Luoshan Expressway involves 1 hub, 3 interconnections, 1 service zone, 51 channels, 33 box culverts and 54 bridges. The standard design of the project is six lanes in two directions; the design speed is 120 km/h and the pavement width is 34.5 m. Builders have vigorously promoted the implementation and application of emerging technologies of smart construction site in Anyang-Luoshan Expressway project. The intelligent control has efficiently facilitated project construction. STEC introduces intelligent prefabricated box girder workshop and uses the independently developed bridge prefabricated component production information management platform so as to ensure that component production information can be tracked throughout the process and the quality can be controlled. Pavement construction information system assists the construction and thus realizes intelligent identification of pavement construction status and quality. In this way, the system promotes the integration mode of factory production, information management and intelligent control.

The PPP project of connection line between Hangzhou-Jinhua-Quzhou Expressway to Hangzhou-Shaoxing-Taizhou Expressway is jointly undertaken by Zhejiang Communications Investment Co., Ltd., Zhejiang Communications Engineering Co., Ltd., STEC Shanghai Infrastructure Co., LTD., and Shanghai Road and Bridge Co., Ltd. The project starts from the north side of Zhangjiafan Hub of Hangzhou-Jinhua-Quzhou Expressway and ends at Fuquan Hub of Hangzhou-Shaoxing-Taizhou Expressway. The route is as long as 22.028 km. The main construction tasks involve subgrade, bridge, culvert, tunnel, pavement, traffic safety, afforestation, etc.
The connection line of Hangzhou-Jinhua-Quzhou Expressway forms an important part of expressway network in Zhejiang Province. It is not only the main fast channel connecting Hangzhou and Shaoxing but also a key channel for Shaoxing City to integrate into Hangzhou metropolitan area and to realize the integration of three districts. Simultaneously, it is also an important link of the outer ring expressway of Keqiao District, Shaoxing City.
STEC scientifically plans and carefully organizes the construction, solves the construction and technology difficulties, addresses the bad geological section, and then get through the construction bottleneck. Based on good construction organization, STEC reasonably allocates resources and keeps balance in construction. It takes environmental protection seriously, carries out green, environmental and high standard construction, and penetrates through forest land, reservoirs and streams. STEC is committed to construct a “safe, ecological and environmentally friendly” highways and contributes to the integrated and high-quality development in the Yangtze River Delta.

The Bid AHTJ-3 of Anyang-Hebi section of Anyang-Xinxiang Expressway will effectively relieve the traffic pressure of the Beijing-Hong Kong-Macao Expressway and optimize the operation efficiency of the road network. It will enhance the Henan-Hebei transportation corridor, improve the layout of regional road network, and strengthen the connection between North Henan and Zhengzhou metropolitan road network.
The Bid AHTJ-3 of Anyang-Hebi section of Anyang-Xinxiang Expressway is as long as 18.84 km. The bid involves 16 bridges, 3 middle bridges, 3 overpasses, 29 culverts, and 2 medium and long tunnels, with the bridge-tunnel ratio over 40%. This project, an important section of the highway network planning in Henan Province (2021-2025), will further improve the “米+井+人” shaped integrated transportation corridor in Henan Province upon its completion. It plays a significant role in solving the expressway connection between Anyang and Hebi and promoting the regional economic development.

Fair-faced concrete serves as a kind of artistic expression technique for modernism in architecture. The fair-faced concrete adopts the natural color of cast-in-place concrete as finish. Its simple, natural and stable appearance delivers an generous and inclusive atmosphere and an eclectic unique artistic beauty. Simultaneously, it needs a cast-in-place molding and achieves the unified difference in color, the smooth surface, the homogeneous bubble and the clear texture. After casting, there is no need for any painting, tile, stone and other processes. In this way, the material shows the plain color decoration effect of concretes "returning to simplicity". This material also embodies the concept of environmental protection because it reduces the surface decoration materials, saves the chemical products, such as coating and finish, and lowers a large amount of construction dust and waste.

The anti-floating counterweight concrete with low-carbon steel slag researched and developed by STEC Shanghai Urban Construction Materials Co., Ltd. is kind of heavy concrete with high specific gravity. It takes the high-quality steel slag as raw material and goes through composite preparation. It is 1.5 times heavier than ordinary concrete and therefore can effectively solve the problems of structural anti-floating counterweight and building balance counterweight due to the lack of structural deadweight in soft soil foundation engineering. 

Foamed concrete is named as "one of the most functional bulk inorganic lightweight materials so far". It is a new kind of porous lightweight concrete material formed by physical foaming method. It lightens the previously heavy concrete and endows concrete with dozens of functions, such as heat preservation, thermal insulation, sound absorption, fire resistance, waterproof, shock wave resistance, electromagnetic wave resistance, air permeability and corrosion resistance. Due to its lightweight, foam concrete can reasonably reduce the load and compensate the free settlement difference after its utilization for backfilling in construction and geotechnical engineering. After its utilization in wall surfaces, foam concrete can not only keep ambient environment warm in winter and cool in summer, but also solve the problems of falling off, fire prevention and durability in traditional external wall insulation materials once and for all.

It is an intelligent operation and maintenance management platform for transportation network infrastructure for transportation supervision, operation and maintenance departments. It mainly serves the construction, operation and management of "six horizontal and eight vertical" expressway network in Shaoxing, providing facilities and equipment asset management, maintenance and repair business management, maintenance decision management, and development and maintenance of operation and maintenance APP by a series of intelligent infrastructure operation and maintenance integrated service solutions such as compilation of digital operation and maintenance guidelines, deployment of intelligent operation management platform, and intelligent analysis of operation and maintenance big data. The platform has standardized and normalized the operation and maintenance of infrastructure, continuously precipitated effective data from unified standard data and extracted reproducible and generalizable data models. It has effectively assisted operation and maintenance personnel in special research and analysis, realized data-assisted decision-making based on facility safety and operation and maintenance safety supervision by connecting 440 Internet of Things sensors, and improved the emergency command ability and road management efficiency.

It is the first component-level water facility and equipment management platform based on BIM+GIS technology, which mainly includes functional modules such as monitoring network, pipeline operation and maintenance, data analysis, hydraulic model, daily dispatching, BIM+GIS, water balance, facility and equipment management and emergency command. It can effectively identify and predict the bottleneck of urban drainage system and its possible problems and risks, and provide professional analysis and management of water pipelines, water quality, leakage, etc. Almighty hard core of refined management: The digital city twin base formed by BIM is adopted to form a visual and component-level digital asset operation and management mechanism, which provides a digital and information foundation for the integration of planning, construction and management in the field of sewage engineering in Jiaxing. Combination of virtual and real daily maintenance: Based on MR mixed reality management platform, inspection personnel can inspect through mobile terminal inspection APP, realizing the combination of "virtuality" and "reality" between BIM model of underground pipelines and inspection and maintenance site.

Shanghai rail transit airport link line is 68.6km in length. The construction management quality and efficiency of the airport link line project can be ensured in an all-round way by the construction management platform + smart site platform. Based on the company's own BIM consulting + engineering construction information + system integration solution, the construction management platform of the project is to integrate the digital twin concept into the site safety, quality and schedule management to realize the digitalization of engineering management and the visualization of construction technology. The smart site platform is based on IOT technology to realize fine management of personnel and environment and minimize blind spots in safety management. During the implementation of the project, the company, guided by operation and maintenance, has introduced GIS+BIM engine with independent intellectual property rights, combined with UAV tilting photography, virtual reality, Internet of Things and other information technologies, comprehensively implemented BIM application technology in Shanghai railway, thereby building the municipal railway standardized industrial system, and getting through the whole life cycle data stream of "planning-design-construction-operation" of the project.

Intelligent transportation control platform of Foshan 1st Ring Expressway is a traffic signal control platform developed for local traffic signal timing optimization centers based on the regional coordination control theory. By optimizing traffic control and intelligent operation and maintenance management, it is to improve traffic efficiency, ensure traffic safety and establish a service guarantee system for citizens' travel and urban traffic management. The platform mainly forms optimization schemes for single point, main line and regional traffic signal control through the analysis and calculation of the urban traffic network on the whole time, whole area and whole amount, and makes real-time evaluation and feedback on the optimization effect of the schemes, forming optimization suggestions for traffic control to ensure the optimal effect of regional traffic control. In addition, with intelligent operation and maintenance management and other functions, it can provide real combat business linkage for traffic management business scenarios, such as real-time supervision of key vehicles, optimization of traffic operation management, intelligent management and control of events and alarms, monitoring and analysis of equipment faults and abnormalities.

Integrated tunnel monitoring system of Shibo Avenue is an integrated intelligent management and maintenance platform developed for the needs of intelligent management and maintenance of road facilities. According to the facility group/facility operation management characteristics and requirements, the platform can customize the whole set of operation management scheme. In the multi-dimensional integrated management mode of "management, operation and maintenance, monitoring, control, command and dispatch", service functions such as road condition monitoring, traffic operation management, mechanical and electrical operation control optimization, emergency management coordination, operation and maintenance management and public information services are integrated, and integrated tunnel monitoring solutions around the closed-loop of "sensing, warning, decision, control and analysis" business are provided. (1) Guided by the management of facility fixed assets, the platform monitors, controls and manages the operation and fault treatment of various types of equipment in the tunnel, processes various state data and operation data in the tunnel, and realizes health diagnosis, pre-maintenance and other functions through the efficient collection of IOT data, data aggregation and environmental condition perception. (2) Guided by the comprehensive tunnel management and control, it improves the comprehensive ability of equipment control, event warning and process management, realizes the operation simulation and emulation of the system, provides operation suggestions and optimization schemes, takes charge of rescue command and provides emergency plans in emergency situations such as accidents and fires.