Silicone foam waterproof sealing strip: High-performance sealing protection solution Core technology: The micro-foaming compression molding technology is adopted. Through vacuum mixing of silicone raw materials and foaming agents, and precise vulcanization at 180-200℃ (for 20-30 minutes), a uniform closed-cell structure (closed-cell rate > 95%) is formed. The cell diameter is controlled at 50-150μm. After surface smooth treatment, there are no permeable pores, and the cross-sectional dimensional tolerance is ≤±0.05mm.