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For more details of PIR Duct Panel, Polyurethane Pre-insulated Duct Panel, Phenolic Duct Panel, PIR Thermal Insulation Board, Fireproof Board Insulation, Pre-insulated Duct Cutting Tool Box and PVC/Aluminum Pre-insulated Duct Flanges, please feel free to contact with us. We focus on the best service and quality of GFI products. We are willing to do long-term business with every customer.