Introduction
In the world of modern construction, EPS (Polystyrene) sandwich panels have emerged as a versatile and cost-effective building solution. Combining lightweight properties with excellent thermal insulation, these panels are ideal for a wide range of applications—from industrial factories and cleanrooms to cold storage facilities and modular buildings.
As a manufacturer and trading company, we offer a comprehensive range of EPS sandwich panels to meet diverse project requirements. This article introduces our main product lines and helps you choose the right panel for your specific needs.
Standard EPS Sandwich Panels
Our standard EPS sandwich panels feature a high-density EPS foam core sandwiched between two layers of color-coated galvanized steel or aluminum sheets or 304 stainless steel sheet. The innovative sandwich structure provides:
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Excellent thermal insulation with low thermal conductivity (0.026–0.034 W/m·K)
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Lightweight construction at only 5–14 kg/m², reducing building loads
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Moisture and corrosion resistance thanks to the closed-cell EPS core
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Easy installation with tongue-and-groove joint systems
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Cost-effectiveness compared to traditional building materials
Specifications:
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Thickness: 50mm, 75mm, 100mm, 150mm, 200mm
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Effective width: 950mm, 1150mm
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Steel sheet thickness: 0.3–0.6mm
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Core density: 8–20 kg/m³
Applications: Industrial plants, warehouses, commercial buildings, cold storage, modular homes, and partitions.
Cleanroom Purification Panels
For industries demanding strict cleanliness and contamination control, we offer specialized purification panels designed for cleanroom environments. These panels are essential in pharmaceutical, electronics manufacturing, food processing, and medical facilities.
Key features:
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Non-porous surfaces that prevent bacterial growth
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High surface flatness for seamless cleanroom walls
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Excellent sealing to maintain positive pressure
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Antimicrobial coating options available
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Fire-resistant core options for enhanced safety
Typical applications: Pharmaceutical GMP workshops, electronics SMT cleanrooms, food processing plants, laboratories, and clean corridors.
Stainless Steel Sandwich Panels
For environments requiring maximum corrosion resistance and superior cleanability, our stainless steel sandwich panels are the ultimate solution. Featuring 304 or 316L stainless steel facings, these panels withstand aggressive cleaning agents and sterilization processes.
Advantages:
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Exceptional corrosion resistance
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Easy cleaning and sterilization (VHP compatible)
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Non-porous surface with antimicrobial properties
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High structural strength
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Long service life in demanding environments
Applications: Bio-pharmaceutical facilities, food processing plants, chemical laboratories, and healthcare environments requiring frequent sterilization.
Aluminum Sandwich Panels
Our aluminum-facing sandwich panels combine lightweight construction with excellent corrosion resistance and high surface flatness.
Key benefits:
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Premium surface flatness (±0.5mm/3m)
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Outstanding strength-to-weight ratio
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Excellent corrosion resistance
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Class A fire rating available
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ESD (electrostatic discharge) capabilities for electronics applications
Applications: Semiconductor manufacturing, precision optics cleanrooms, aerospace facilities, Seaside architecture and electronics assembly plants.
PROPOR “Everlasting Foam” Sandwich Panels — The EPS Upgrade
PROPOR (also known as “Everlasting Foam” or “True Gold Board”) represents the next generation of EPS insulation technology. This innovative material uses a “fireproof isolation film” technology that coats each EPS particle with a fire-retardant layer, creating independent fire-resistant units within the core.
Why choose PROPOR panels:
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Superior fire resistance — Achieves Class A fire rating (tested to GB8624-2012), with no combustion, dripping, or smoke under fire conditions
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Same thermal performance — Maintains the low thermal conductivity (0.03–0.04 W/m·K) and lightweight properties of traditional EPS
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Enhanced durability — Resists aging and deformation, overcoming traditional EPS limitations
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Non-toxic — Even under high temperatures, no harmful gases are released
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Recyclable — Environmentally friendly and sustainable
PROPOR panels solve the critical safety concern of traditional EPS boards while preserving all their advantages: excellent insulation, light weight, easy installation, and cost-effectiveness. They are ideal for projects requiring enhanced fire safety without compromising thermal performance.
Applications: Fire-sensitive building facades, cleanrooms with strict fire codes, cold storage facilities, and industrial buildings requiring A2 fire-rated insulation.
Contact Us
We are a leading manufacturer and trading supplier of EPS sandwich panels, offering customized solutions for global customers. Free samples are also available. All panels are produced to international standards with options for color, thickness, length, and facing materials.
📩 Contact us today for professional selection guidance and quotations!
(Sales Manager)
QINGDAO BESINO INDUSTRY AND TRADE CO., LTD
E-mail: sales06@qdbsn.cn
Tell & WhatsApp: 008618306393929.

