LAIRUN Magnesium PanelsMOS / MgO sandwich panels and hollow glass-magnesium board
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Magnesium oxysulfide vs magnesium oxide: a naming and system guide

Buyers often treat magnesium oxysulfide and magnesium oxide as two names for one panel. On this site they are not. Magnesium oxide (MgO) is the oxide family name for the board and panel range, while magnesium oxysulfide (MOS) is the sulfate-family panel name for the MOS sandwich panels. This guide explains the distinction and shows how to avoid merging two specifications into one.

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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Two names, two product positions

The magnesium oxide panel range covers the oxide board and the oxide sandwich panels: the board page, the panel category pages, and the hybrid panels that combine a magnesium-oxide board with rock wool. The MOS panel range covers the sulfate-family sandwich panels: the handmade magnesium sulfate panel and the machine-made magnesium oxysulfide panel. The ranges overlap in material family but not in model: no single model is both a MOS model and a generic MgO model, and no model page on this site claims both names as its listed name.

The practical error to avoid is copying a figure across the names. A width, thickness, or joint listed for a MOS model is a MOS model figure, and a figure listed for an MgO panel is an MgO panel figure. The naming guide on this site states the same rule for the sulfate and oxysulfide wordings, and this blog applies it to the oxide-versus-oxysulfide pair.

How to compare the two in an inquiry

State the full model name, not just the family name: 'handmade MOS panel, Type 50' or 'machine-made MgO rock wool panel, Type 50, 1150 type', with the width, thickness, and joint. If a supplier's reply uses the other family's wording for the same panel, ask which model listing it refers to, and confirm the figures, rather than assuming the wordings are equivalent.

Before ordering, confirm the minimum order quantity and lead time for the 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.