The safety valve can make the lifting fluid-pressure drive circuit of a fork lift truck or a crane obtain not only high efficiency ascending speed, but also reliable and safe descending speed.
该安全阀使叉车或起重机的起升液压驱动回路既有高效率的上升速度，又有可靠的安全下降速度。
Must be able to operate fork lift and crane.
必须能够驾驶叉车和吊车。
Must be able to operate fork lift and crane.
必须能够驾驶叉车和吊车。
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