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Humic Acid Granular Fertilizer, Organic Fertilizer OEM. Root Growth Promotion: Stimulates deep, dense root systems and enhances early plant development. Soil Structure Improvement: Increases cation exchange capacity and water holding capacity of soil. Stress Tolerance Enhancement: Boosts plant resistance to drought, salt, cold, and heat stress. Customizable Specifications: Size and shape can be customized; color is fixed to Black. Versatile Application: Suitable for vegetables, fruits, flowers, hydroponics, and turf. Certified Quality: Manufactured under ISO9001 and ISO certification standards. Fast Lead Time: Average production lead time within 15 working days for all seasons.