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Company updates, industry data and technical Q&A. The industry data is compiled from the China Extruded Polystyrene (XPS) Insulation Board Market Research Report (2025–2026 Edition); the report PDF is available for download on the Certificates page of this site.
Industry Data
In 2025 the domestic XPS industry kept growing, with fire-retardant class and compliant high-end capacity as the focus of competition.
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Company news
The three certificates were issued by the certification body on 2026-08-31 and are valid until 2029-08-30; the scope of all three is polystyrene foam (XPS) production and related management activities. The Chinese and English certificate originals and the verification method are published on this site.
View certificate informationCompany news
After the cutting and stacking stations at the Jinling Industrial Park plant in Jiangshan Town, Laixi were reorganised, common sizes are kept in standing stock, and cut-to-size batches of thicknesses of 20–100 mm, non-standard sizes and shaped pieces can be shipped in stages to match construction milestones.
Plants and production capacityCompany news
The 20 kg/m³ fire-retardant foam board and eco-friendly laminating adhesive, with the 50 g/m² non-woven reflective film, are bonded into sets at the same plant, so underfloor heating projects can buy the whole bill of materials at once and avoid the compatibility problems of multi-source purchasing.
View product parametersCompany news
Each shipment is accompanied by the factory inspection report and conformity certificate for that batch, with the stack numbers matching the delivery documents, which makes on-site sampling for testing and the compilation of acceptance records easier.
Testing and documents supplied with the goodsIndustry news
The research report shows domestic XPS output of about 3.8 million tonnes in 2025 against a capacity of about 4.2 million tonnes, a capacity utilisation rate of 90.5%; as green-building and urban-renewal projects advance, the market size is expected to exceed CNY 31 billion in 2026.
Download the original reportIndustry news
The report notes that the nationwide penetration of B1 class fire-retardant XPS reached 53.7% in 2025 and is expected to rise to 61.2% in 2026. Low-end standard boards face intense homogeneous competition, while the supply of capacity that meets testing and fire-safety requirements remains relatively tight.
Fire classes and specificationsIndustry news
Looking at the demand structure, wall and roof insulation in buildings is still the main use; floor and wall insulation for cold chain logistics accounts for about 18%, and frost protection of foundations for municipal roads, bridges, tunnels and airport runways for about 12%.
Key selection points by positionIndustry news
High compressive strength, low water absorption and freeze-thaw resistance make XPS board common at cold store floors, garage roof slabs and road subgrade frost protection. These positions usually require a higher compressive class and a vapour barrier.
XPS technical dataTechnical Q&A
Thickness is set by thermal calculation. For the same thermal resistance requirement, an XPS board with a thermal conductivity of about 0.028 W/(m·K) can be noticeably thinner than materials with higher thermal conductivity; common practice falls in the 30–80 mm range, and graphite XPS board or a somewhat thicker layer can be used where energy-saving standards are higher.
Sizes and edge typesTechnical Q&A
Graphite powder in the cell structure blocks heat radiation, so the silver-grey graphite XPS board usually has a lower thermal conductivity than a standard board of the same thickness. It suits projects where the insulation layer is limited in thickness and energy-saving standards are high.
Compare the parameter differencesTechnical Q&A
XPS board performs better in compressive strength and moisture resistance, so it is used where there are loads or a risk of damp; EPS board is light and easy to cut and carve, and is widely used for decorative shapes and some external wall systems. The two can be used in different zones of the same project, decided by the design and the fire-safety requirements.
About EPS foam boardTechnical Q&A
Yes. The board face is dense, so adhesion for direct rendering is limited. In practice the surface is roughened or coated with an interface agent first, then alkali-resistant fibreglass mesh and rendering mortar form the protective layer, with anchor fasteners set at the spacing required by the design and the code.
Ancillary materialsReading Guide
The choice between B1 (fire-retardant) and B2 (combustible) is decided mainly by building height, the use of the building and the requirements of the fire code. Boards are produced in separate batches by class and the class is stated on the delivery documents, so that classes are not mixed in one stack.
Positions that carry load over the long term — floors, garage roof slabs, cold stores and road subgrades — need a higher compressive class. For ordinary wall insulation, select according to the design load; raising the class without need only adds cost.
Boards should be stacked level, kept out of prolonged sun and rain, and kept away from open flame and organic solvents. On site, stack by position and collect the cutting dust in one place for disposal.
Tell us the element — wall, roof, underfloor heating or cold store — and the thickness required, and we will advise on common sizes to GB/T 10801.2, send samples and quote batch supply.