Magnesium Oxide (MgO)
From 99.7% high-purity MgO for electronic ceramics to active grades with 175 m²/g surface area. Eleven grades, all produced in-house.
View all gradesWuxi, China · Magnesium compounds since the 1970s
Magnesium compounds,
made to your specification
Three product families, one integrated supply chain. More than 20,000 tonnes of annual capacity, and a laboratory team that will tune purity, particle size and surface treatment until the powder behaves the way your process needs.
50+Years in magnesium compounds
10,000+m² production, R&D and warehousing base
20,000+t/yr combined magnesium compound capacity
3Joint laboratories
10PhD holders
100+Engineering and technical staff
Documented credentials
ISO 9001
HG/T 2573-2012
China Inorganic Salts Industry Association
Import / Export Licence
National High-Tech Enterprise
Invention Patents
Three families, one supply chain
One producer, three chemistries. Pick the family, then pick the grade — or tell us the property you need and we will build the grade around it.
Magnesium Hydroxide (Mg(OH)₂)
High-purity, surface-modified, flame-retardant and food/pharma grades of Mg(OH)₂ — engineered for dispersion, whiteness and low heavy metals.
View all grades
Magnesium Carbonate (MgCO₃)
Basic, light, heavy, high-purity and food/pharma MgCO₃. Controlled bulk density from 0.11 g/ml upwards for fillers, rubber and sports applications.
View all gradesWhat changes when you buy from a producer, not a trader
Capacity you can plan around
A 10,000+ m² production and warehousing base with more than 20,000 tonnes of combined annual magnesium compound output.
A laboratory that answers in days
Three joint laboratories and 100+ engineering staff work on your target property, not just on a catalogue number.
Grades cut to your process
Purity, particle size, bulk density and surface treatment are adjusted against your process window and confirmed with a trial batch.
You nominate the inspector
Every batch ships with its own certificate of analysis, and third-party inspection at your nomination is welcome.
Fifty years of magnesium chemistry, in numbers
Figures published by the company and used across our technical documentation.
50+years in magnesium compounds
10,000+m² production, R&D and warehousing base
20,000+t/yr combined magnesium compound capacity
3joint laboratories
100+engineering and technical staff
200+employees
Where our products end up
From halogen-free flame retardancy to electronic ceramics, food additives and acidic wastewater treatment — the right grade changes the result.
Inside Zehui
Fifty years of one chemistry, from laboratory bench to container
One of the first Chinese enterprises to research, produce and sell magnesium compounds, restructured from a state-owned company. Today three joint laboratories sit alongside a 20,000 t/yr production base — so a trial batch can become a production campaign without changing supplier.
News & technical insights
What our laboratory and technical team publish: standards, processing notes and application deep dives.
Magnesium oxide CAS number and the standards behind a purchase order
CAS 1309-48-4 identifies the substance, but it says nothing about purity. Here is how to read the standards that actually govern a grade.
Read article
Magnesium oxide flue-gas desulfurisation: efficient and recoverable
MgO reacts with SO₂ to form magnesium sulfite that can be oxidised and recovered — a different economics from limestone-gypsum scrubbing.
Read article
High-purity magnesium oxide in lithium-battery materials
MgO is used as a dopant and coating precursor in cathode materials. Purity and particle size decide whether it helps or hurts.
Read article
Compliance documentation
Credentials we can document today. If your audit needs a specific scheme, ask us — we will tell you exactly what is in place rather than guess.
ISO 9001
Certified quality management system for the design, development, manufacture and sales of magnesium compounds.
HG/T 2573-2012
One of the drafting units for the Chinese industry standard for industrial magnesium oxide.
China Inorganic Salts Industry Association
Member company; recognised supplier within the national magnesium salts industry.
Import / Export Licence
Independent import and export rights — we ship directly, without a trading intermediary.
National High-Tech Enterprise
Certified high-tech enterprise status for magnesium-based new materials.
Invention Patents
Patent portfolio covering nano magnesium materials and environment-friendly flame retardants.
Send us the grade. Or send us the property you need.
Send us the grade you currently buy, or the property you are trying to reach. Our technical sales team replies within one working day.