Welcome to Tianjin Xingyu Fertilizer Industry Co., Ltd. (XYF), a premier manufacturer and global exporter of high-grade calcined magnesium based in Tianjin, China. Established in 1993, XYF brings over 30 years of chemical processing expertise to the international market, producing top-quality calcined magnesium (CAS NO: 1309-48-4) alongside a comprehensive lineup of magnesium-based mineral compounds. We partner with industrial buyers, fertilizer manufacturers, livestock feed compounders, and chemical procurement managers worldwide to deliver factory-direct raw materials.
Direct Mine Ownership & Quality Assurance: Unlike standard chemical trading intermediaries, XYF operates its own high-quality magnesium ore mining base in Liaoning Province. Calcining our raw mineral deposits in temperature-controlled kilns ensures that our calcined magnesium features high chemical purity, exceptional reactivity, and strictly controlled trace elements across every batch.
Industrial Capacity & ISO Certification: Supported by an ISO 9001-2015 certified quality system, our modern facility operates large-scale calcination and grinding lines capable of satisfying massive commercial orders. Every batch is backed by rigorous internal testing and SGS laboratory certifications.
Strategic Logistics & Ocean Shipping: Located just 80 km from Tianjin Port and 15 km from major railway freight terminals, our location minimizes inland freight costs, guaranteeing rapid container dispatch and highly competitive landed pricing.
As a full-service mineral processor, XYF supplies high-solubility calcined magnesium available in both finely milled 200-mesh powder and uniform dust-free granules:
| Parameter | Agriculture Grade Specs | Industrial Grade Specs |
| Main Content (MgO) |
≥85.0%
|
≥90.0%
|
| Ignition Loss (IgL) |
≤8.0%
|
≤6.0%
|
| Silicon Dioxide (SiO) |
≤6.0%
|
≤5.0%
|
| Calcium Oxide (CaO) |
≤9.58%
|
≤2.5%
|
| Iron Oxide (Fe2O3) |
≤1.0%
|
≤0.8%
|
| Aluminum Oxide (Al2O3) |
≤0.8%
|
≤0.8%
|
| Physical Form |
200-Mesh Powder / Granules |
200-Mesh Powder / Granules |
Agricultural Fertilizers & Soil Conditioning: Serves as an essential source of bioavailable magnesium to correct soil deficiencies, boost chlorophyll production, and balance soil pH in crop production.
Animal Feed & Nutrition Supplements: Used in livestock feed formulations, mineral blocks, and ruminant diets to support bone health and prevent grass tetany.
Industrial Cements & Refractory Materials: Acts as a vital binder in oxychloride/oxysulfate cements, water treatment systems, and industrial chemical synthesis.
Guided by our core principle—"Integrity builds quality, quality wins the market"—XYF exports calcined magnesium and specialty sulphate compounds to over 30 countries across Southeast Asia, Europe, North America, and Australia. We offer flexible OEM private labeling, custom particle sizing, and heavy-duty moisture-proof packaging options, including 25kg PP bags, 50kg bags, and 1000kg/1250kg jumbo super sacks with full palletization. With fast production turnaround times of 7–15 days, we keep your commercial supply chain running without interruption.
Contact our commercial sales engineering team today to request a factory-direct quote, Certificate of Analysis (CoA) documentation, and laboratory samples.
