Personal protective equipment against falls from a height - Retractabletype fall arresters.
防止从高处跌落的个人防护设备。收放式防跌落装置。
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Mobile crane is a general or special the heavy lifting the chassis on the work and equipment, cranes, retractabletype mainly adopt the oil tank movement.
Due to the particularity of retractable structure, design of this type of project must greatly differ from that of normal structure and be more difficult than the latter.