https://fearsteve.com/shopping/what-are-the-stages-of-npk-fertilizer-production/ NPK fertilizer, as a compound fertilizer with a scientifically balanced ratio of nitrogen, phosphorus, and potassium, requires precise control through five core stages in its production to achieve a balanced nutrient content and stable properties, meeting the agricultural demand for high-efficiency fertilizers. Wed, 19 Nov 2025 02:59:17 UTC en