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OEM NPK 21-21-21 Water Soluble Fertilizer Manufacturer
NPK 21-21-21 is a fully water-soluble compound fertilizer designed for fast nutrient delivery in agriculture and commercial crop production. Produced in Shandong, China, this quick-release powder supports OEM/private label supply, bulk wholesale orders, and consistent quality backed by ISO, COA, and MSDS documentation for importers, distributors, and agricultural input buyers.
Supply TypeMOQ: 625 tons
ServiceOEM / Customization
DocumentationCOA & MSDS
- 100% water-soluble NPK 21-21-21 powder with quick-release performance for efficient fertigation and foliar use
- Manufactured by a China producer offering OEM/private label service for distributors, wholesalers, and agricultural brands
- Agriculture-grade compound fertilizer, purity 100%, appearance: yellow water-soluble powder, HS code 3105900000
- Quality assurance supported by ISO, COA, and MSDS; samples available to verify product consistency before bulk purchase
CertificationsRoHSISOCEMSDSUL
PRODUCT DATA
Technical Specifications
TECHNICAL INFORMATION
Product Insights & Application
Products Description
Composition | ||
Appearance | Duofen High-phosphorus type | |
N(g/L)，P(g/L)，K(g/L) | 40, 420, 40 | |
Ca(g/L) | 35 | |
Zn(g/L)
| 35 | |
Density | 1.51 | |
PH(1 :250) | 3.7-4.2 | |
Company Profile
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Exhibition
Packaging and Delivery
FAQ
Shandong Duofen Agricultural Co., Ltd. – FAQ
1. What is liquid fertilizer?
Liquid fertilizer is a nutrient-rich solution that provides essential nutrients like nitrogen, phosphorus, and potassium to plants in a readily absorbable form.
2. How do I apply liquid fertilizer?
Liquid fertilizers can be applied through drip irrigation systems, or foliar spraying. Always follow the recommended dilution rates and application methods provided on the product label.
3. When is the best time to apply liquid fertilizer?
Apply liquid fertilizer during the growing season, typically from spring to early fall. Avoid fertilizing during dormant periods to prevent potential damage to plants.
4. How often should I fertilize my plants?
Fertilization frequency depends on the plant type and growth stage. Always adjust based on specific plant needs and soil conditions.
5. Can I use liquid fertilizer on all plants?
Liquid fertilizer is suitable for most plants, including vegetables, fruits, and ornamental plants. However, always check the product label for any plant-specific recommendations or restrictions.
6. How should I store liquid fertilizer?
Store liquid fertilizer in a cool, dry place away from direct sunlight and extreme temperatures. Ensure the container is tightly sealed to prevent contamination and degradation.
7. Is liquid fertilizer safe for the environment?
When used as directed, liquid fertilizers are safe for the environment. Avoid over-application to prevent nutrient runoff, which can harm water sources.
8. Do you offer organic liquid fertilizers?
Yes, Shandong Dofen Agricultural Co., Ltd. offers a range of liquid fertilizers formulated to promote healthy plant growth while being environmentally friendly.
9. How can I contact customer support?
For inquiries or support, please contact us.
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