Hot Selling Closed Cell Open Cell Spray Polyurethane Foam Factory Direct Supply. B1 Fire Retardant Grade: Meets B1 fireproof standards for exterior wall spray insulation materials. High Purity Formula: Purity reaches 99.9% with CAS Number 9003-11-6. Versatile Applications: Suitable for building insulation, automotive interiors, furniture, and packaging. Closed Cell Structure: Rigid foam with closed-cell structure for superior insulation and waterproofing. ISO 9001 Certified: Manufacturing process certified under ISO-9001 quality system. Global Export Capability: Products exported to North America, Europe, Asia, Australia, and South Africa. Fixed Component Ratio: Optimized 1-1.2 volume ratio for compatibility with spray machines. Professional R&D Team: 30% of staff are technical talents specializing in chemical management and production.