Welcome to Tianjin Xingyu Fertilizer Industry Co., Ltd. (XYF), one of the premier magnesium oxide suppliers and chemical exporters based in Tianjin, China. Established in 1993, XYF brings over three decades of chemical manufacturing expertise to the global market, producing high-grade magnesium oxide granules (CAS NO: 1309-48-4) alongside a comprehensive suite of agricultural and industrial mineral salts. We partner with B2B procurement managers, fertilizer blenders, and industrial distributors worldwide to deliver consistent, factory-direct chemical raw materials.
Direct Mine Ownership & Purity Control: Standing apart from generic trading intermediaries, XYF operates its own high-quality magnesium mine base in Liaoning Province. Sourcing directly from our mineral deposits ensures that our magnesium oxide granules feature exceptional chemical purity, predictable reactivity, and controlled trace impurities across every production run.
Industrial Scale & ISO Quality Assurance: Supported by an ISO 9001-2015 certified management system, our facility operates modern granulating production lines capable of fulfilling large-scale commercial orders. Every shipment undergoes strict internal laboratory testing and is backed by SGS certifications.
Port Proximity & Shipping Logistics: Located just 80 km from Tianjin Port and 15 km from major railway freight yards, our strategic facility reduces inland transport expenses, ensuring fast vessel dispatch and highly competitive landed pricing.
As specialized magnesium oxide suppliers, XYF manufactures high-solubility magnesium oxide granules engineered specifically for ease of handling, minimal dust emission, and uniform mechanical blending:
| Parameter | Agriculture Grade Specs | Industrial Grade Specs |
| Main Content (MgO) |
≥ 85.0%
|
≥ 90.0%
|
| Ignition Loss (IgL) |
≤ 8.0%
|
≤ 6.0%
|
| Silicon Dioxide (SiO2) |
≤ 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 State |
Uniform Granules |
Uniform Granules |
Bulk NPK Fertilizer Blending & Agriculture: Ideal for mechanical bulk blending with NPK fertilizer mixes to provide dust-free, steady-release magnesium essential for crop chlorophyll synthesis.
Animal Feed & Ruminant Nutrition: Used as a essential dietary magnesium supplement in mineral licks and feed blocks to prevent grass tetany in livestock.
Industrial & Chemical Formulations: Serves as a vital raw material in water treatment processing, refractory materials, and industrial cement compounding.
Guided by our core principle—"Integrity builds quality, quality wins the market"—XYF exports magnesium oxide granules and specialty sulphate compounds to over 30 countries across Southeast Asia, Europe, North America, and Australia. We offer complete OEM customization, custom bag printing, and heavy-duty moisture-proof packaging options, including 25kg PP bags, 50kg bags, and 1000kg/1250kg jumbo super sacks with full palletization. With rapid production lead times of 7–15 days, we keep your commercial supply chain operating seamlessly.
Contact our commercial sales team today for a factory-direct quote, Certificate of Analysis (CoA) documentation, and laboratory samples.
