Custom Blended NPK Fertilizer (OEM)

Verified Supplier 📄 ISO 9001 Certified 📊 SGS Tested 🚢 Global Shipping

Full-service OEM custom NPK fertilizer blending and manufacturing. Choose any NPK ratio, granule size, granule color, micronutrient package, and packaging design tailored to your market needs. Our agronomists design formulations based on your soil test results and crop requirements. Complete private-label branding with your logo, artwork, and multilingual labels. Dedicated production lines ensure consistent quality and on-time delivery.

NPK RatioCustom (any combination)
Granule Size1-6mm (custom)
Granule ColorWhite / green / blue / custom
AdditivesMicronutrients, humic, TE
Packaging10kg / 25kg / 50kg / 1000kg (custom)
BrandingFull OEM private-label
MOQ100 tons
Lead Time15-25 days
✅ Factory Direct Price
📦 OEM Packaging Available
🚢 FOB / CIF / CFR
💳 T/T, L/C Accepted

Product Information

ParameterSpecificationTest Method
NPK RatioCustom (e.g., 20-10-10, 12-32-16, 15-15-15)Any ratio per customer requirement
Total Nutrient Content25-60% (configurable)Higher ratio = higher concentration
Secondary NutrientsCa, Mg, S (optional)Add per soil test recommendation
MicronutrientsZn, B, Fe, Mn, Cu, Mo (optional)Chelated or sulfate forms
Granule Size1-2mm / 2-4mm / 4-6mmMatch application equipment
Granule ColorWhite, green, blue, yellow, red, customFood-grade dyes
Particle Uniformity90% min within target rangeISO 8397
Crushing Strength20-30NISO 8337
Moisture2.0% maxISO 760
Anti-Caking TreatmentStandard (included)Optional enhanced treatment
Packaging10kg / 25kg / 50kg / 1000kgCustom bag design available
Shelf Life24 months (sealed, dry storage)-

Product Features

Unlimited Formula Flexibility

Any NPK ratio from high-nitrogen (30-0-0) to high-phosphorus (10-50-10) to balanced (15-15-15), plus secondary and micronutrient additives for complete custom nutrition.

Soil-Test-Based Formulation

Our agronomists analyze your soil reports and design the optimal nutrient balance for your specific soil type, pH, and crop requirements at no additional cost.

Complete OEM Branding

Your brand name, logo, product design, and multilingual labels on every bag. Full private-label service with custom artwork and packaging design.

Custom Granule Appearance

Choose granule size (1-6mm), color (white, green, blue, custom), and visual characteristics for brand differentiation and market positioning.

Dedicated Production Lines

Custom orders run on dedicated blending lines to prevent cross-contamination and ensure consistent formula accuracy batch after batch.

Quality Assurance

Every batch tested for nutrient content, granule uniformity, and moisture. Full COA and SGS pre-shipment inspection provided with every order.

Application Scope

Custom blended fertilizer serves distributors, importers, agricultural cooperatives, and large-scale farming operations requiring branded, region-specific fertilizer formulations.

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Distributors & Importers

Build your own fertilizer brand with custom formulations, packaging, and pricing for your regional market.

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Large-Scale Farms

Custom formulas based on your farm's soil analysis for maximum yield efficiency and cost optimization.

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Cooperatives & Gov't

Bulk custom formulations for agricultural cooperatives, government subsidy programs, and development projects.

Mixing Precautions & Compatibility

⚠ Important Mixing Restrictions
  • Nutrient compatibility in blending: Our agronomists verify that all nutrient sources in your custom formula are chemically compatible. We avoid combinations that cause reactions, caking, or nutrient loss during storage.
  • Urea + superphosphate blends: Compatible but must be applied promptly. Prolonged storage causes urea to react with monocalcium phosphate, reducing water-soluble phosphorus. We recommend application within 30 days of blending.
  • Ammonium sulfate + MOP: Compatible and stable. Excellent choice for sulfur-deficient soils requiring both potassium and sulfur nutrition.
  • Calcium-containing blends: Calcium sources (gypsum, calcium nitrate) must not be blended with sulfates or phosphates in the same granule, as they form insoluble compounds. We use separate granulation for calcium-containing formulas.
  • Micronutrient addition: Chelated micronutrients are preferred for blended formulas as they remain stable and available. Sulfate forms are economical but may react with phosphorus over time.
  • Anti-caking treatment: All custom blends receive standard anti-caking treatment. Enhanced treatment available for high-humidity destination markets.
  • Storage: Custom blends should be stored in sealed, dry conditions. Shelf life depends on formulation but typically 12-24 months. We provide specific storage guidance with each custom formula.

Customized Formula Service

Our OEM service covers every aspect of custom fertilizer production. From formulation design to final packaged product, we handle the entire process with full technical support and quality control.

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Free Formulation Design

Our agronomists design the optimal NPK + micronutrient formula based on your soil test, crop type, and target yield. No charge for formulation with confirmed orders.

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Sample Production

We produce 5-10kg samples of your custom formula for testing and approval before bulk production begins.

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Packaging Design Service

Our design team creates custom bag artwork with your logo, brand colors, product information, and multilingual labels.

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Full Private-Label Branding

Your brand name on the product, your design on the bag, your company information on labels. Complete white-label service.

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Quality Testing & Certification

Every batch tested for nutrient accuracy. COA, SGS inspection, and all export documentation provided with each shipment.

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OEM Process Workflow

1) Requirement consultation → 2) Formula design → 3) Sample production → 4) Approval → 5) Bulk production → 6) QC testing → 7) Packaging → 8) Export shipping.

Learn More About Custom Service →

Packaging & Shipping

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50kg Custom Bag

Standard export packaging with your custom design. Woven PP with inner PE liner. 560 bags per 20GP (28T).

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25kg Custom Bag

Retail-ready packaging with your branding. 1,120 bags per 20GP (28T).

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1000kg Jumbo Bag

Big bag / FIBC for bulk handling with your branding. 28 bags per 20GP (28T).

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10kg / 5kg Custom

Retail consumer packaging with full-color design. Pallet-loaded for distribution.

Container Loading Capacity

Container TypeBag SizeBags/ContainerTotal Tonnage
20GP50kg560 bags28 tons
20GP25kg1,120 bags28 tons
20GP1000kg jumbo28 bags28 tons
40HQ50kg1,160 bags58 tons

Shipping & Storage Notes

  • Sea freight: FOB Qingdao, CIF any port, CFR destination. Typical transit: 7-45 days depending on destination.
  • Store in dry, ventilated warehouse. Keep away from moisture, rain, and direct sunlight.
  • Shelf life: 12-24 months in sealed original packaging (depends on specific formulation).
  • Custom packaging materials require 7-10 days for printing and preparation before production begins.
  • Full export documentation: COA, Packing List, Commercial Invoice, Bill of Lading, Certificate of Origin, SGS inspection report.
  • Lead time: 15-25 days from order confirmation and packaging approval to vessel loading.

Request Price Quote

Fill out the form below to receive a detailed quotation within 24 hours. Include your target quantity, destination port, and any customization requirements.

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