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Premium Class B1 Insulation Tube for Solar, HVAC, and Plumbing. High Performance Materials: Made from Nitrile rubber and PVC for superior thermal insulation and durability. Flame Retardant B1 Grade: Meets B1 combustion performance standards with self-extinguishing properties. Customizable Dimensions: Length is fully customizable while width is typically fixed at 1200mm. Comprehensive Certifications: Certified by UL, GreenGuard Gold, ROHS, and meets GB/T 17794-2021 standards. Versatile Applications: Ideal for HVAC, plumbing, industrial equipment, and cold/hot medium pipelines.