南海市三山防火设备厂钢质防火门经国家监督复检合格后的反思广东省南海市三山防火设备厂是防火阀、排烟防火阀的专业生产厂家。产品经国家固定灭火系统和耐火构件质量监督检验测试中心检验合格，出厂产品性能均得到保证。近年来，工厂按照国家标准《钢质防火门通用技术条件》 Nanshan Sanshan Fireproofing Equipment Factory’s steel fire doors have been re-examined by the State. After review, the Sanshan Fire Protection Equipment Factory of Nanhai City, Guangdong Province is a professional manufacturer of fire dampers and smoke dampers. The products have passed the inspection of the national fixed fire extinguishing system and the quality inspection and testing center of refractory components, and the performance of the ex-factory products is guaranteed. In recent years, the factory complied with the national standard “General Technical Conditions for Steel Fire Doors”