Suitable for Metro, Inter-city Trains, enviromental friendly green product, no pollution, Composite brake shoe, pads, blocks,--Composite friction ... in high speed emergency braking condition, no pollution,--Used for the 0~120km/h underground train and inter-city ... We are manufacturer specializing in all typical Brake Shoe,Brake Drum, Brake Disc, Wheel Hub, Flywheel for trucks of Benz, BPW, ROR, ...