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Premium Chelated EDTA & EDDHA Fe Products

Unitechem Co., Ltd – Trusted manufacturer since 2009. Delivering high-purity chelated micronutrients for agriculture, industry, and chemical applications worldwide.

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About Unitechem

Unitechem Co., Ltd was established in 2009 and has since specialized in the research, development, and production of EDDHA Fe and EDTA series chelated products. As a leading Chinese promoter of EDDHA Fe, we bring this high-performance product to business partners across the globe.

Our main product lines include chelated EDTA salts (Fe, Cu, Zn, Mn, Ca, Mg), EDTA basic compounds (acid, 2Na, 4Na), and DTPA acid. We are committed to innovation, excellence, and sustainable manufacturing practices.

  • Founded in 2009 with a focus on chelated micronutrients
  • One of China’s leading manufacturers of EDTA and EDDHA Fe
  • Annual production capacity of 150,000 tons
  • Consistent quality and competitive pricing
Unitechem Manufacturing Facility

Our Product Range

We offer a comprehensive portfolio of chelated micronutrients and EDTA-based chemicals, engineered for stability, solubility, and high bioavailability.

EDDHA FE6% Powder

EDDHA FE6% Powder

High-efficiency chelated iron for alkaline soils. Ortho-ortho values: 2.0/3.0/3.6/4.2/4.8

EDDHA FE6% Granular

EDDHA FE6% Granular

Granular form for easy handling and controlled release in agricultural applications.

EDTA Fe

EDTA Fe 13%

Chelated iron with high solubility. Ideal for foliar sprays and fertigation systems.

EDTA Cu

EDTA Cu 15%

Copper chelate for correcting Cu deficiency in crops. Stable and highly effective.

EDTA Zn

EDTA Zn 15%

Zinc chelate for improved plant growth and resistance to stress.

EDTA Mn

EDTA Mn 13%

Manganese chelate for photosynthesis support and enzyme activation.

EDTA Ca

EDTA Ca 10%

Calcium chelate for cell wall development and fruit quality improvement.

EDTA Mg

EDTA Mg 6%

Magnesium chelate for chlorophyll synthesis and nutrient transport.

EDTA Acid

EDTA Acid

High-purity EDTA acid for industrial and chemical synthesis applications.

EDTA 2Na

EDTA 2Na

Disodium salt of EDTA, widely used in water treatment and food preservation.

EDTA 4Na

EDTA 4Na

Tetrasodium EDTA for high solubility in alkaline environments.

DTPA Acid

DTPA Acid

Diethylenetriaminepentaacetic acid for specialized chelation applications.

Why Choose Unitechem?

Consistent Quality

Rigorous quality control ensures every batch meets international standards.

Global Reach

Serving partners in over 50 countries with reliable logistics and support.

Expert Support

Our technical team provides formulation advice and application guidance.

Technical Innovation

Continuous R&D to improve product performance and sustainability.

Competitive Pricing

Large-scale production enables cost-effective solutions without compromise.

Certified Production

Compliant with international standards for safety and environmental responsibility.

Our Manufacturing Strength

150,000 tons/year

Annual Production Capacity

2009

Year of Establishment

50+

Countries Served

Frequently Asked Questions

What is the difference between EDDHA and EDTA chelates?

EDDHA chelates are more stable in high-pH (alkaline) soils compared to EDTA. EDDHA Fe is especially effective in calcareous soils, while EDTA chelates perform well in slightly acidic to neutral conditions.

Can I use your chelated products in organic farming?

EDTA and EDDHA are synthetic chelators and generally not approved for certified organic agriculture. Please consult your certification body for specific regulations.

Do you offer custom formulations or private labeling?

Yes, we provide OEM services and can customize packaging, labeling, and formulations based on client requirements.

What documents do you provide with shipments?

We supply Certificate of Analysis (CoA), Safety Data Sheets (SDS), commercial invoice, packing list, and bill of lading.

How can I request samples?

Contact our sales team via email or phone to request product samples. We offer small quantities for evaluation purposes.

Get in Touch

Reach out to our team for product inquiries, technical support, or partnership opportunities.

Contact Information

Company: Unitechem Co., Ltd

Address: 1-605 BINHAI INT’L, 1st Beihai Road, TEDA, Tianjin, China 300457

Phone: +86-22-59850282

Fax: +86-22-59850281

Email: info@chelatedta.com

Sales Managers:

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