How to choose fire door?
2022-01-18
1、 According to the certificate, the fireproof door is a product included in the type approval system, and the product needs type inspection before sales. The general type inspection report describes the specifications, dimensions, composition, materials, etc. of the sample in detail. When actually purchasing, the type inspection report needs to be obtained from the manufacturer. The fireproof door manufacturer sells directly, and provides the inspection report and qualification. In the distinction between fire rolling shutter door and rolling shutter door
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