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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Disclosed is a lengthened mortise door lock which comprises a lock cover, a short panel fixedly connected with the lock cover, an inner panel, an outer panel, a locking plate and a locking box.

一种加长型插芯门锁，包括锁盖、与锁盖连接固定的短面板、内外面板、锁扣板以及锁扣盒。

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