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RBM SMSG Railway Frog

RBM frog is the abbreviation of Rail bound Manganese Frog and SMSG frog is the abbreviation of Solid Manganese Self-Guarded frog, these two kinds of frogs are widely sold to the NA market. We’re exporting those frogs for 90RA rail, 115RE rail and 136RE rail per AREMA specification all the time....

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