Waterproof Fireproof Sound Spraying Inject/Injection Wall Insulation PU Polyurethane. Eco-Friendly Blowing Agent: Uses 365mfc/245fa instead of HCFC-141B for environmental safety. Customization Options: Offers full, minor, and flexible customization from samples or designs. Versatile Application: Ideal for cold rooms, pipelines, construction, and automotive insulation. Uniform Cell Structure: Produces fine and uniform cells for consistent foam quality.