System Overview A cleanroom injection panel is a foam-injected PU/PIR sandwich panel engineered for ultra-low thermal conductivity and fully airtight sealing in cleanroom, cold-storage and HVAC construction. Foamed continuously between two coated galvanized steel facings, this panel forms a seamless, gap-free enclosure that eliminates dust traps and air leakage points. Available in framed PUR construction (aluminum or iron frame) or frameless, fully automated PIR construction, it is the preferred choice for facilities requiring superior insulation, fire safety, and structural airtightness across pharmaceutical, electronics, food, and chemical environments. Key architectural advantages include: Ultra-Low Thermal Conductivity: A λ value of 0.018–0.024 W/(m·K) delivers industry-leading insulation, significantly cutting HVAC energy loads in cleanrooms and cold-storage rooms. Airtight Convex-Groove Joint: A unique convex-groove structure locks panels into a flush, gap-free seal, preventing air leakage and particle ingress. PUR & PIR Fire-Rated Options: Choose B2-grade PUR with aluminum or iron framing, or B1-grade frameless PIR for continuous, fully automated production and enhanced fire resistance.