Faced with the personalized demand for special VAE (vinyl acetate-ethylene copolymer emulsion) in the high-end European market, Sinochem International Trading accurately captured business opportunities during customer visits in 2023, and quickly joined hands with Chuanwei Chemical to form a joint R&D team, building a collaborative system of “market demand – technical R&D – mass production – cross-border supply”. The person in charge of the European Operation Center made multiple visits to customers’ production sites, reversely deducing raw material technical indicators (such as film-forming property, viscosity, compatibility) through end-product performance, and feeding back real-time to Chuanwei Chemical’s R&D team. Targeting European customers’ environmental standards (low VOC, no harmful impurities) and application scenarios (high-end packaging, coating additives), the R&D team continuously optimized formula parameters, conducted multiple rounds of lab-scale and pilot-scale tests, and solved the adaptability problem between raw materials and customers’ production processes. Finally, the samples successfully passed the customers’ strict verification. To enhance cooperation competitiveness, the team also optimized product packaging to reduce logistics costs, and launched an integrated supply solution for multiple types of products including VAE, PVA (polyvinyl alcohol), and VAM (vinyl acetate), simplifying customers’ procurement processes. The successful export of this customized VAE new product not only achieved a key breakthrough for Sinochem International Trading in the high-end European market but also verified the feasibility of the “customer-oriented + upstream-downstream collaboration” customized R&D model.