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.

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.

The 2021 comprehensive small watershed improvement project for clean eco-system in Huinan Town involves five aspects, namely river and lake system treatment, non-point source contamination control, comprehensive prevention and control of soil and water loss, ecological restoration, and living environment improvement. It mainly covers 80 reaches of river courses in Huinan Xiaohuangpu and Laogang River, 10 groups and 1 tributary in Yuandong, 5 groups and 1 tributary in Yuandong, etc.
The project team adopted water reoxygenation technology to aerate the river course. By improving the ecological environment in the local waters, the team restored the aerobic microbial community and thus ensured the survival of plankton and fish. By virtue of the biological seine technology and the principle of biological pollution control, plants were able to absorb nutrients in the water and to form biofilms to purify water. The team adopted biological seine as a framework to control the growth area of plants so as to avoid the secondary contamination caused by floating plants growing uncontrollably in the water. They employed a plant-floating bed technique, and planted aquatic plants, such as reeds, on the water surface. Those plants are effective in suppressing phytoplankton, improving water transparency, and lowering COD. While purifying water, they can create habitats for birds, fish and other living beings, and improving the landscape.
The comprehensive small watershed improvement project for clean eco-system works as an important basic project for the local government to implement the rural revitalization strategy. It is of great significance to prevent and control soil erosion, promote ecological restoration and protection of rivers and lakes, improve overall agricultural productivity, facilitate the development in green industry, and construct the rural development pattern of harmonious co-existence between man and nature.

On August 29th, 2020, STEC Urban Operation successfully entered the airport sector by winning the bid for “the flight zone and other facilities operation and maintenance project of Shanghai Hongqiao International Airport”. Hongqiao Airport flight zone project covers an area about 6 km2 and mainly includes various pavement maintenance, sporadic maintenance of buildings and properties and the sporadic facility maintenance. STEC Urban Operation will continue underpinning its foundation of intelligent operation and maintenance, centering on its core business of rail transit and bridge maintenance and management, and creating a complete product and service chain including renewal and information businesses, so as to gradually form a new mode for airport zone management in the future.

This project is a key project for the joint development in hydrogen energy by Petro China and Shanghai Shenneng Group. It is a demonstration station and benchmark station for hydrogen energy utilization in Lingang New Area of Shanghai. The project is located on the north of the intersection between Pingxiao Road and Zhenglang Road in Lingang New Area, Situan Town, Fengxian District, Shanghai Municipality, covering an area of 2,900 m2. The hydrogen system of this project adopts the design of 50-MPa hydrogen storage and distribution. The hydrogen storage scale is 800 kg. It adopts a dual machine refueling mechanism. The gasoline refueling system adopts four sets of 30-m3 vacuum dual capacity pipe and four machine dual fuel and four-gun scheme. The station is also established with two fast charging parking lots. The project has the advantages of small footprint, good economic benefits, energy saving and environmental friendliness. The successful operation of this project not only improves the standardized management level of STEC Shanghai Energy Construction Group Co., Ltd. but also provides high-quality engineering design and management services for Petro China and Shanghai Sheneng.

Nanjing Metro Line 5 serves as a key line from southeast to northwest in Nanjing rail transit network and is positioned as an urban trunk line. The line covers a total length of 37.4 km and has 30 underground stations. Among them, 14 are transfer stations. The line is the "king of transfer stations". There are a total of 10 bidding sections for the whole line, of which 6 are contracted by STEC. They mainly comprise 21 stations, 22 shield sections and other ancillary structures.
Nanjing Metro Line 5 has been constructed under multiple difficulties. First, the stratum conditions are complex and changeable, with intersecting floodplain, sentry and other landforms. Sand layer, pebble layer and clay layer often interact with each other; non-layered structure is obvious, and formation pinching is everywhere. Second, there are dense surrounding buildings along the line, of which most are protective buildings, cultural relics, greening zones. They set high requirements on protection measures. Third, the shield tunneling machine passes under the two operating subway lines, penetrates through important buildings, structures, roads, bridges, rivers and other complex and high-risk areas, setting high requirements on protection measures and standards.

Section B in the westward route extension project of Jihua Road in Foshan is about 5.404 km in its full length. The whole route was constructed under the first-class highway standards in view of urban road functions. The project forms a part of the first-ring road westward expansion strategy of Foshan. It will become a new part of the Guangzhou-Foshan one-hour traffic circle that connects the west wing of Nanhai area, Gaoming, Sanshui with downtown area of Foshan City, and help Foshan to be better integrated into the Guangdong-Hong Kong-Macao Greater Bay Area.
The controlled westward route extension project of Jihua Road in Foshan undertaken by STEC is a pair of single-layer shield tunnels with six lanes in two directions. The left line of shield tunnel is as long as 1,472 m and the right line is as long as 1,474.202 m. The section under river is as long as 920 m. The “Jihua No.1” shield tunneling machine employed is the first slurry balance shield tunneling machine with a super large diameter in Foshan and the largest one in Guangzhou-Foshan area. It marks an important milestone for the transport infrastructure construction in Foshan.

As the first tram in Zhejiang Province, the Jiaxing Tram Project is one of the "one hundred key projects in one hundred years" and one of the ten landmark projects of Jiaxing City. It is also a major transportation facility project for Jiaxing to implement the national strategy of Yangtze River Delta integration and construct a central hub city in the core area of the Yangtze River Delta.
The Phase I project passes through 49 intersections along the way, including 27 signalized intersections and 22 non-signalized intersections. The average interval between intersections along the route is relatively close, basically 318 m to be specific. Phase I passes through 16 large and small bridges and under nearly 1 km of railways, and sees complex construction environment. The large engineering volume involves many different professional contents, such as sub-grade, bridge, track, road, drainage, greening, underground structure, housing construction, power supply, communication, operation and dispatching, geomantic electricity and escalator, intelligent building, intelligent transportation, ticket sales system, process equipment, etc.
It only took 370 days for STEC to open the first section of Jiaxing Tram. This speed has broken the conventional domestic tram construction schedule, and set a new benchmark for similar tram construction projects.

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.

In this project, the world-leading VSM sinking shaft tunneling technology is adopted to "dig" a three-dimensional space for 200 small vehicles in a narrow area of 390 m2. On average, it takes only 1.95 m2 of ground space to park one vehicle. Citizens can gain access to their vehicles via the landscape entrance and exit on the ground. It takes them as little as 90 s to receive a high-quality parking experience. This project provides experience and reference for the intensive use of urban land resources, the development and utilization of underground space, and the expansion of effective supply of parking facilities.
The UP intelligent parking scheme proposed by STEC conforms to the development trends, such as "smart city" and “Internet +”, and fully draws on the experience and exploration on domestic and foreign solutions for parking difficulties. Public hot spots, such as downtown areas, see large flow of people and vehicles, dense layout of old buildings and tight surrounding land resources. In view of those urban difficulties, STEC creates the "three new" intelligent parking system that integrates new technology, new platform and new mode so as to solve the parking difficulty and fully activate the service efficiency of UP underground garage.

The river-crossing tunnel under West Jianning Road, Nanjing begins at the intersection of Xingpu Road and Jiangbei Avenue in Jiangbei New District; its main line, constructed with a bridge over Jiangbei Avenue, ends near the intersection of Jianning West Road and Rehe Road. The route has a total length of about 6,801 m, of which the tunnel section is as long as about 3,550 m (Including opening section), the subgrade section is as long as about 336 m, and the elevated section is as long as about 2,915 m. “Jianning” slurry balance shield tunneling machine with a super large diameter of 15.07 m was adopted for tunnel construction. The shield tunneling machine will penetrate through the Yangtze River levee, Nanjing Metro Line 5 and other sensitive buildings in succession. The construction of river-crossing tunnel under West Jianning Road is of great significance for Nanjing to speed up the construction of Jiangbei New District, improve the capacity of Yangtze River trunk, relieve the traffic pressure of the main city across the Yangtze River, and keeps promoting the regional road network system.

The PPP project for integrated traffic hub of Wenling Station is located at the Railway New District of Wenling City, Zhejiang Province, with a total construction area of 108,800 m2. The project mainly includes four sub-projects: The east square hub, the supporting housing for rail transit, the bus transfer center and the parking building.
Facing the challenges like the wide work plane, the large volume of steel structure and the great number of buildings / structures, STEC made early plans and careful preparation. It escorted the construction of steel structure through early survey, GPS positioning, BIM simulation, advance deepening and refining of steel structure process. During the construction of deep foundation pit, STEC actively dealt with complex geological conditions, difficult support, super typhoon and other adverse factors. Thus, it ensured that the land subsidence, the maximum settlement of ramp pier and station pier column were in their controllable ranges, and guaranteed the safe operation of railway. STEC has made joint and practical efforts to construct a new traffic pattern and secured the largest and most beautiful city entrance for Wenling.