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Lvyin Urea Formaldehyde Solution Slow-Release Fertilizer. Dual Release Mechanism: Combines 41% fast-acting urea (24-48h) with 59% slow-release polymer (30-45 days). Safe and Non-Phytotoxic: Low biuret and salt content ensures safety for vegetables, flowers, and turf grass. Customizable Formula: Formula and color customization are supported to meet specific agricultural needs. Versatile Application: Liquid soluble product suitable for both foliar application and irrigation systems. Certified Quality: Manufactured under ISO9001, ISO, and CE certifications for consistent quality.