High-Purity Kieserite Fertilizer & Magnesium Sulphate Monohydrate Manufacturer

Tianjin Xingyu Fertilizer Co., Ltd. is a premier global Kieserite fertilizer manufacturer and exporter with over 28 years of agricultural chemical expertise. Operating from our state-of-the-art 20,000 m² manufacturing base, we maintain an annual production capacity of 300,000 metric tons. We specialize in producing top-tier Magnesium Sulphate Monohydrate (Kieserite) in granular and powder forms to support global agricultural distributors, plantation owners, and fertilizer formulators.

Why Kieserite is Essential for Sustainable Agriculture

Kieserite (MgSO4·H2O) is a naturally occurring mineral fertilizer that provides a concentrated, highly effective source of magnesium and sulfur. Unlike fully soluble magnesium sources that wash away quickly in high-rainfall climates, Kieserite features a steady, controlled release profile. This ensures long-lasting soil fertility, especially in acidic soils, sandy soils, and tropical plantation environments.

Magnesium forms the core atom of chlorophyll, driving photosynthesis, carbohydrate synthesis, and root elongation. Sulfur plays an crucial role in amino acid formation, protein synthesis, and disease resistance. Incorporating Kieserite guarantees continuous nutrient uptake throughout the critical growth stages of crops.

Key Product Advantages & B2B Features

• High Nutrient Concentration: Delivers high levels of Magnesium Oxide (MgO) and Sulfur (S), significantly reducing freight and handling costs per unit of active nutrient.

• Controlled Leaching Rate: Sustainable release characteristics make it ideal for tropical climates, heavy rainfall regions, and long-cycle perennial crops.

• Superior Mechanical Properties: Available in hard, uniform 2-5mm round granules and fine powder, perfectly suited for bulk blending (BB fertilizers) and automatic tractor spreading.

• Strict Quality Assurance: Produced strictly in accordance with ISO 9001 standards. Every shipment is backed by a full Certificate of Analysis (COA) and supports independent SGS, BV, or CCIC inspection.

Technical Specifications Overview

• Product Name: Kieserite / Magnesium Sulphate Monohydrate (Agricultural Grade)

• Chemical Formula: MgSO4·H2O

• Total Magnesium Oxide (MgO): 25% - 27% Min

• Water Soluble MgO: 20% - 22% Min

• Sulfur (S) Content: 16% - 20% Min

• Physical Form: Off-White Granular / White Powder

• Particle Size: 2mm - 5mm Granular / 80-100 Mesh Powder

• Packaging Options: 25kg, 50kg PP/PE bags, 1000kg/1250kg Jumbo Bags, Custom OEM Packaging available

Key Agricultural Applications

Our agricultural grade Kieserite is widely applied across diverse farming sectors:

• Commercial Plantations: Essential secondary nutrient for oil palm, rubber trees, coffee, tea, sugarcane, and banana plantations to prevent interveinal chlorosis and boost yields.

• Field Crops & Horticulture: Highly beneficial for potatoes, corn, wheat, fruit trees, and vegetables in magnesium-deficient soils.

• NPK Fertilizer Blending: Serves as a premium dry-blending raw material for custom NPK compound fertilizers due to its low moisture absorption and physical stability.

Partner with a World-Class Kieserite Supplier

When you import bulk Kieserite directly from Xingyu, you benefit from competitive factory-direct pricing, guaranteed supply stability, customized packaging solutions, and seamless maritime logistics. We regularly export to major agricultural markets across Southeast Asia, Latin America, Africa, and Europe.

Contact our international sales team today to request free samples, technical datasheets, or a custom wholesale quote!