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工业级防火聚氨酯/PIR夹芯板户外用耐腐蚀钢材料Industrial-Grade Fireproof PU/PIR Sandwich Panel Corrosion-Resistant Steel Material for Outdoor Application
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工业级防火聚氨酯/PIR夹芯板户外用耐腐蚀钢材料Industrial-Grade Fireproof PU/PIR Sandwich Panel Corrosion-Resistant Steel Material for Outdoor Application
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