... high working efficiency, shorten the operation period. SQH400 Crawler-type Dynamic Compactor Performance Advantage=Unhook to falling, high ... , lower multiplying power, fast lifting speed;=Optional 30 ton hook, can unhook dynamic compaction after adapted, high ... Engine Adopt lengthened 55Tcrawler retractable chassis institution, the working crawler length is 6000mm, width is 4450mm; the complete ...