A European client plans to build an automotive parts processing plant and needs to purchase high-quality steel structures for the main frame of the plant, the foundation of production equipment, and the construction of warehouse racking. The client had previously compared five steel structure manufacturers both domestically and internationally, considering factors such as raw material specifications, processing precision, delivery time, and overall pricing, before reaching a preliminary cooperation agreement with our factory. In the initial stages of cooperation, the client raised several complex requirements: First, the steel structure needed to meet EU CE certification standards, ensuring a seismic resistance level of 8 and wind resistance meeting local typhoon protection requirements of level 12. Second, for the high-temperature production areas of the factory, the steel structure surface needed to have a high-temperature resistant and corrosion-resistant coating with a service life of no less than 15 years. Third, the design of key nodes needed to be optimized to address the load-bearing and stability issues of the large-span workshop (32 meters per span), while controlling the overall weight to reduce foundation construction costs. To address these needs, our factory assembled a dedicated technical team and conducted multiple rounds of discussions over seven days. We selected S355JR low-alloy high-strength steel conforming to EN 10025 standards for raw materials, optimizing beam and column cross-sectional dimensions and connection methods. We collaborated with a third-party testing agency to adjust the anti-corrosion coating formula and verified its high-temperature resistance through a 48-hour salt spray test. We invited senior structural engineers in the industry to participate in the node design, adopting a combination of bolted ball joints and welded joints to improve the stability of large-span structures. Simultaneously, we presented the client with complete documentation of our ISO9001 quality management system certification, ISO14001 environmental management system certification, and EU CE steel structure product certification reports, supplemented by successful case studies and testing data from similar automotive parts factory projects. Ultimately, the client highly recognized our optimized design scheme and comprehensive qualification guarantees, and officially placed an order on November 13, 2025, for a total of 280 tons of steel structural components, including H-beams, steel columns, supports, and customized connectors. Currently, the order has entered the precision machining stage, and processes such as raw material cutting, welding, shot blasting and rust removal, and coating are proceeding in an orderly manner according to plan.