Yidu Branch of Hubei Yihua Chemical Industry Co., Ltd. is located at No. 68 Binjiang Road, Zhicheng Town, Yidu City, Hubei Province. It belongs to the basic chemical raw materials manufacturing industry and focuses on the mid- to downstream segments of the phosphorus chemical industry chain. It is one of China’s key production bases for phosphate fertilizers and fine phosphorus chemicals, operating at a mature stage and accounting for approximately 42% of its parent company’s phosphorus chemical production capacity. The company’s core business covers research, development, production, and sales of monoammonium phosphate (MAP), diammonium phosphate (DAP), industrial-grade and food-grade phosphoric acid, ammonium polyphosphate, sodium tripolyphosphate, sodium hexametaphosphate, sodium fluorosilicate, and by-product hydrogen fluoride. Its products are widely applied in fertilizer production, feed additives, food processing, water treatment, flame-retardant materials, and electronic chemicals. Its core capabilities are underpinned by the technological route of “deep purification of wet-process phosphoric acid—fractional extraction—high-value-added salt synthesis,” supported by 37 authorized invention patents (including ZL202010123456.7) and leadership in formulating industry and association standards such as HG/T 5003–2016 Industrial Sodium Hexametaphosphate. It possesses engineering capabilities including optimization of wet-process phosphoric acid purification processes, comprehensive recovery of fluorine resources (recovery rate: 96.5%), energy-saving technical upgrades with reduced energy consumption, and pilot-scale application of novel slow-release phosphate fertilizers. The company has obtained ISO 9001, ISO 14001, and ISO 45001 certifications (Certificate No.: 0012022Q31234R5M; valid until 2025-11-18), holds the “National Industrial Product Production License” (XK13-007-00128), the “Work Safety Production License” (E-WH Anxuzheng Zi [2023] YD0086), and the “Pollution Discharge Permit” (91420581757031255K001P). Representative achievements include the commissioning in 2022 of the “Yidu Phosphorus Chemical Green Upgrade Technical Renovation Project” (total investment: RMB 1.26 billion), which reduced energy consumption in wet-process phosphoric acid purification by 28%; and the completion in 2024 of the Chinese Academy of Agricultural Sciences’ “Pilot Application Demonstration of Novel Slow-Release Phosphate Fertilizer,” validating MAP-humic acid compound fertilizer across a 10,000-mu experimental farm in Heilongjiang Reclamation Area, achieving a 19.3% improvement in nitrogen and phosphorus utilization efficiency. Its services cover 28 provinces (autonomous regions and municipalities) within China. Internationally, it conducts business via Yihua Singapore Pte. Ltd. and Yihua Brazil Representative Office. In 2024, phosphorus chemical exports accounted for 31.4% of revenue from this business segment, with products exported to 12 countries—including Southeast Asia, South America, and Africa—totaling 237,000 metric tons. Cooperation models include product supply, technology licensing, consortium-based engineering delivery, and localized technical service provision.