The Foundation of Excellence: Our Premium Raw Materials for Magnesium Sulfate (MOS) Boards

At QDFPM LIMITED, we believe superior products begin with superior ingredients. Unlike standard boards, our Magnesium Sulfate (MOS) panels are engineered from a foundation of high-purity, meticulously selected raw materials. This unwavering commitment to quality ensures unmatched performance, exceptional environmental credentials, and long-term stability, making our boards the intelligent choice for demanding projects worldwide.

1. High-Purity Magnesium Oxide (MgO)

• Our Standard: We use only high-purity, light-burned Magnesium Oxide (MgO ≥ 85%) sourced from certified suppliers. Its active content is strictly controlled to ensure a complete and stable chemical reaction with the magnesium sulfate solution.

• The Difference: Many manufacturers use lower-grade MgO with higher impurity levels (e.g., unburned carbonate, excess calcium oxide). These impurities can lead to efflorescence ("halogen bleeding"), board warping, and reduced long-term strength. Our high-purity MgO eliminates these risks, guaranteeing a stable, durable core.

2. Refined Magnesium Sulfate Heptahydrate (MgSO₄·7H₂O)

• Our Standard: We utilize refined, food-grade Magnesium Sulfate Heptahydrate crystals, dissolved into a precise-concentration solution. This purity is critical, as it contains minimal traces of chlorides, iron, or other heavy metals that can corrode reinforcement materials or degrade the board's integrity.

• The Difference: Common industrial-grade MgSO₄ often contains contaminants that can lead to moisture absorption, corrosion of metal fixtures, and surface efflorescence. Our refined MgSO₄ ensures a non-corrosive, chemically stable, and high-strength bond within the board's structure.

3. Reinforced Composite Fibers

• Our Standard: Our proprietary blend includes a dual-layer reinforcement system: a high-density fiberglass mesh embedded within the core and selected organic fibers throughout the matrix. This creates a "skeleton" that provides exceptional tensile and flexural strength, impact resistance, and flexibility, preventing cracks during installation and handling.

• The Difference: Some suppliers use minimal or low-quality mesh to cut costs, leading to brittle boards that are prone to snapping. Our advanced reinforcement strategy allows for larger panel sizes, easier handling, and superior performance in seismic and high-wind applications.

4. Functional Mineral Additives & Modifiers

• Our Standard: This is our secret to performance. We incorporate a proprietary mix of pozzolanic minerals, water-repellent agents, and functional polymers. These modifiers are engineered to:

• Enhance Water Resistance: Form a hydrophobic barrier within the matrix, significantly reducing water absorption and making our boards ideal for high-humidity environments.

• Prevent Mold & Mildew: Create an inorganic, alkaline environment that is inherently inhospitable to biological growth.

• Improve Workability: Ensure a smooth surface finish that is ideal for direct painting or veneering.

• The Difference: This is a key differentiator. Many basic MOS boards lack these advanced modifiers, making them suitable only for dry interior applications. Our modified boards are performance-engineered for a much wider range of uses.

5. Lightweight, Inert Fillers

• Our Standard: We use pine Wood dust and expanded perlite to optimize the board's weight and thermal properties without sacrificing strength.

• Lightweight, Inert Fillers

• Our Standard: We use pine Wood dust and expanded perlite to optimize the board's weight and thermal properties without sacrificing strength.

• The Difference: While some use sand or heavy mineral fillers that add dead weight, our advanced fillers reduce density, improve nail/screw hold, and contribute to the board's natural thermal insulation properties.

•The Difference: While some use sand or heavy mineral fillers that add dead weight, our advanced fillers reduce density, improve nail/screw hold, and contribute to the board's natural thermal insulation properties.

Our Commitment to Quality & Traceability

Every raw material batch arrives with a Certificate of Analysis (CoA). Our in-house quality control lab verifies each CoA and conducts its own tests for:

• Chemical Purity

• Particle Size Distribution

• Reactivity

• This double-check system ensures that only certified materials enter our production process, guaranteeing batch-to-batch consistency and product reliability.

Why Our Raw Materials Give You a Better Building Product:

• No Warping or Cracking: Stable chemistry and high purity prevent the destructive expansion and contraction seen in inferior boards.

• Zero Corrosion: Refined MgSO₄ ensures compatibility with metal studs, screws, and electrical components.

• Superior Moisture Resistance: Advanced modifiers make our boards perform in applications where standard MOS boards would fail.

• Eco-Friendly & Healthy: Free from asbestos, formaldehyde, VOCs, and other harmful substances. Our boards contribute to healthier indoor air quality and are fully recyclable.

• Choose QDFPM for MOS boards built on a foundation of quality.