Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
The subway platform door is an isolation device installed in the subway to separate the passengers from the arriving subway vehicles. Because the daily flow of people in the station is huge, each component of the subway platform door needs to be tested and certified by a third party. Platform door brush seal is no exception. Which third-party test reports are required for platform door brush seals? The third-party reports most commonly requested by customers are mainly pyrotechnic reports of combustion tests, generally divided into national standards (GB / T 8624), German standard (DIN5510), British standard (BS6853) American standard (NFPA130), European Union standard (EN45545) and other four types.