在外界温度840摄氏度的高温下，在30分钟内可保持箱内温度低于170摄氏度，使箱内的重要文件完好无损。尺寸：w380mm*d280mm*h160mm(外部)w320mm*d220mm*h85mm(内部) 重量:7.0-8.0kg 主要功能及结构: important / confidential documents in the brifcase can be well-kept and prevented from destroying of fire accident.the briefcase can be successfully kept in the environment where the temperature is up to 840`c for at least 30 minutes and the internal temperature of the product will less than 170`c.all important/confidential documents in our product will survive