... equipments.Weifang Lingwei Machinery Co.,LtdLW-WD series gold panning ship has advanced technology, reasonable structure, reliable operation and ... Ltd).1. Mining system: It is made up of the dredging bucket, chain, underwater big arm, upper and lower quadrangled ... ., it is used for operating of the entering ship, changing ship, mooring ship and submarine sliding and lifting arm upgrade(Weifang Lingwei ...