... 塞入门 plug door 塞入门导轮 door guide wheel 三大件转向架 three-piece truck ...
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The products mainly cover: speed governor, safety gear, buffer, steel cable brake, lock, guide shoe, door opener, guide wheel, etc.
现主要产品有：限速器、安全钳、缓冲器、钢丝绳制动器、门锁、导靴、开门机、导向轮等产品。
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