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At noon on May 19th, under the scorching sun, at the site of the Sichuan Petrochemical RTO waste gas treatment system project carried out by the Dalian branch of Kunlun Engineering, concrete pump trucks pumped out the final batch of concrete, completing the pouring of the ground surface. Although the colors of the surface varied due to differences in the timing of concrete pouring, the entire site formed a unified structure made entirely of concrete, with a grand and imposing appearance. The completion of the floor construction marks the successful finish of the project’s civil engineering works. The RTO civil engineering is an important part of the styrene-butadiene rubber RTO waste gas treatment system project. Since the equipment is installed inside an operating styrene-butadiene rubber plant, the construction conditions for civil engineering work are extremely harsh. During the construction process, the project team leveraged the advantages of a design-led general contracting approach by carefully formulating construction plans. By working closely with local units from Sichuan Petrochemical as well as the construction contractors, they overcame various challenges such as a tight schedule, the impact of equipment returns on design conditions, and sudden leaks in existing pipelines in the construction area. As a result, they successfully completed all key milestones, achieving the goal of a high-standard soil-free construction environment 2 days ahead of the overall project schedule. By coordinating efforts and making scientific assessments, goals can be achieved. In civil engineering projects, work always involves dealing with soil – breaking up the ground, digging, filling in materials, pouring foundations, and then backfilling. Each of these steps is interrelated, and the slightest mistake can lead to chaos at the construction site. To ensure effective coordination of construction activities, from the outset of the project, the project team focused intensely on the three key elements of focusing on objectives and goals, pooling intellectual resources, and gathering necessary resources. Procurement focuses on the funds returned after equipment orders are placed, in order to create conditions for the rapid completion of design work ； Once the design is completed, the designers send the drawings to the site as soon as possible to support on-site construction. With the concerted efforts of everyone in the project team, the submission of the foundation construction drawings was ensured, laying a solid foundation for on-site construction. The drawings are available, and the necessary conditions for construction have been met; however, it remains a question whether a construction work order can be issued on site. Since the construction site is located within an operating facility, meeting strict local safety regulations is another challenge faced by the construction work. To ensure the full progress of construction work, the project team and local units worked together to assess the situation on site on a daily basis. Based on the construction requirements, they formulated project plans that had to be strictly followed, thereby ensuring the successful achievement of the project objectives. Through meticulous effort, a high-quality brand image will be created. From the outset of the project, the project team was determined to use high-standard services to continuously enhance the market brand of \"Kunlun Dalian\", and to turn the RTO waste gas treatment system project into a top-quality undertaking. During the construction process, personnel from the project team can be seen at the construction site at all times. They ensure strict quality control over every batch of materials that arrives and over each stage of the construction work, and they address promptly and carefully any issues that arise regarding the appearance of the concrete, cutting seams, grounding electrodes, etc., thereby contributing to the creation of high-quality results. The goal of eliminating soil use in the project was achieved ahead of schedule, laying a solid foundation for subsequent tasks such as on-site equipment installation and pipeline welding. Next, the project team will work more closely with all parties involved in the project, advancing subsequent tasks with high standards and strict requirements to ensure its successful completion in high quality.