Premium Magnesium Compounds for Global Industries

Trusted supplier of high-purity magnesium oxide, carbonate, sulfate, hydroxide & gym chalk. Serving over 2,000 customers across 100+ countries with food, pharma, industrial, and custom-grade solutions.

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100+

Industries Served

2,000+

Global Customers

100,000+

Tonnes Annual Capacity

About MagnesiumKing

Hebei Meishen Technology Co., Ltd., operating as MagnesiumKing.com, was established in 2003. Our legacy traces back to a Sino-foreign joint venture with over 30 years of industry experience. As a high-tech enterprise, we specialize in the deep processing of magnesium compounds, integrating R&D, production, and global sales.

We produce premium magnesium oxide, carbonate, sulfate, hydroxide, and gym chalk products in food, pharmaceutical, analytical reagent (AR), silicon steel, reactive, and industrial grades. With over 300 specialized product variants, we serve more than 100 industries worldwide.

Our mission is to deliver ultra-pure, reliable magnesium solutions tailored to the evolving needs of modern manufacturing, healthcare, nutrition, and new materials development.

Our Product Range

From food additives to pharmaceutical excipients and industrial catalysts, our magnesium compounds meet the highest global standards.

Food Grade Magnesium Oxide

High-purity MgO used as a nutritional supplement and food additive. Complies with FSSC22000 and KOF-K standards.

• Purity: ≥ 98.5%
• CAS No: 1309-48-4
• Applications: Fortification, anti-caking agent

Pharma Grade Magnesium Oxide

USP/BP-grade magnesium oxide for pharmaceutical formulations. Ideal as an antacid and excipient.

• Meets USP, BP, EP standards
• Low heavy metal content
• High reactivity and solubility

Pharma Grade Magnesium Carbonate Heavy

Dense form of magnesium carbonate used in tablets and capsules for controlled release and stability.

• High bulk density
• Excellent flow properties
• USP/Ph.Eur compliant

Food Grade Magnesium Sulfate

Also known as Epsom Salt, used in food processing, brewing, and mineral fortification.

• Heptahydrate form (MgSO₄·7H₂O)
• FSSC22000 certified
• Soluble, neutral pH

Magnesium Hydroxide

Used as a flame retardant, antacid, and wastewater treatment agent. High surface area and reactivity.

• CAS No: 1309-42-8
• Low chloride and sulfate
• Custom particle size available

Silicon Steel Grade Magnesium Oxide

Specialized MgO for insulating coatings on grain-oriented electrical steel used in transformers.

• Ultra-low CaO and Fe₂O₃
• High thermal stability
• Enhances magnetic properties

Reactive Magnesium Oxide

High surface area MgO for use in refractories, catalysts, and advanced ceramics.

• Surface area: 80–150 m²/g
• Fast hydration rate
• Custom calcination profiles

Gym Chalk (Chalk Block & Ball)

Pure magnesium carbonate chalk for athletes, climbers, and weightlifters. Non-toxic and sweat-absorbent.

• Available in block and ball form
• No fillers or additives
• Ideal grip enhancement

Request Custom Product Development

Key Applications

Our magnesium compounds power innovation across diverse sectors.

Pharmaceuticals

Excipients, antacids, and active ingredients in tablets, capsules, and supplements.

Food & Nutrition

Fortification, mineral supplements, anti-caking agents, and brewing aids.

Industrial

Refractories, catalysts, rubber, plastics, and water treatment applications.

New Materials

Lithium battery cathodes, electronic ceramics, 5G base stations, and mobile glass substrates.

Frequently Asked Questions

Is food-grade magnesium oxide safe?

Yes. Food-grade magnesium oxide is a safe and effective ingredient approved for use in food fortification and as an anti-caking agent. It helps improve nutritional value and product stability.

What grades of magnesium oxide are available?

We offer multiple grades including food, pharmaceutical, analytical reagent (AR), silicon steel, reactive, and industrial. Each is tailored for specific performance requirements.

Can you customize magnesium compounds?

Yes. With over 30 years of R&D experience, we offer custom particle size, purity, reactivity, and packaging solutions to meet unique industrial needs.

What is the production capacity?

Our current annual production capacity exceeds 100,000 tonnes, ensuring reliable supply for global partners.

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