What is a magnesium oxysulfide panel?
A magnesium oxysulfide panel is a sandwich panel whose core belongs to the magnesium oxysulfide (MOS) family. MOS expands to magnesium oxysulfide. On this site, the MOS family has two models, and this explainer describes both without inventing a performance figure for either.
Evidence strip
- Brand established 31 October 2012, according to the company profile.
- Jihua Laboratory project: 40,000 m², sulfomagnesium panels, as listed in the source site's project listing.
- Guangzhou Quaker project: 35,000 m², magnesium-oxide rock wool panels and hollow magnesium-oxide panels, as listed in the source site's project listing.
- Dongpeng Changsha base: 50,000 m², stainless-steel magnesium-oxide cleanroom panels, as listed in the source site's project listing.
- Certificates available upon request. No certificate number or issuing body is stated on this site.
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The two MOS models
The handmade MOS panel is listed as the handmade magnesium sulfate panel, Type 50, at a regular width range of 300 to 1,180 mm and a regular thickness of 50 mm, with custom thicknesses of 75 and 100 mm, joined by tongue-and-groove or middle-aluminium connection. The brochure self-description for this model states that the maker is the only domestic manufacturer of pure magnesium sulfate panels, producing with 100 percent magnesium sulfate, and that the panel does not absorb moisture — stated here as brochure self-description, not as a test conclusion.
The machine-made MOS panel is listed as the machine-made magnesium oxysulfide tongue-and-groove panel, Type 50, 1150 type, at a regular width of 1,150 mm and a thickness range of 50 to 150 mm. The source-site product wording for this panel states a GB8624-1997 Class A fire rating, local high-temperature resistance above 1,000 degrees without heating the back surface, a flatness error controlled within 0.1 mm, and a service life of not less than 20 years — stated here as source-site product wording, not as a test conclusion.
What a MOS panel is not
A MOS panel is not a generic magnesium oxide panel, and it is not an oxychloride panel. The oxide name covers the wider MgO range, and the oxychloride name covers a different chemistry that the sulfate-based panel is presented as an alternative to, with that framing attributed to the brochure. Keeping those three names apart — oxide, oxysulfide/sulfate, and oxychloride — is the whole point of this explainer, and the naming guide states the rule in full.
Before ordering, confirm the minimum order quantity and lead time for the MOS model you select, and confirm the applicable humidity range for that model by inquiry, as no humidity figure is stated on this site. Certificates are available upon request.
Company: Foshan Lairun New Building Materials Co., Ltd.. Address: Nanhai National Eco-Industrial Park, Danzao Town, Nanhai District, Foshan, Guangdong, China. Phone: +86 13929918930. Email: [email protected]. Before ordering, confirm the minimum order quantity and lead time for this model. Certificates are available upon request. Please ask for the certificate list for the model you are selecting.