Stable upstream cooperation is the foundation of reliable delivery. We maintain close collaboration with core raw-material suppliers, creating clear advantages in feedstock assurance, logistics efficiency, cost control, and technical coordination. Our strategic partners include Ecisco, one of China’s leading C5 producers with 550,000 tons of annual capacity, and yussen, one of China’s leading maleic anhydride producers with 440,000 tons of annual capacity. Our plant is located within 30 km of both partners, enabling faster raw-material turnover and more efficient supply coordination.