... Dredge components 1.--winch,cutter head,Pulley,spuds 2.--hydraulic system 3.--engine,pump ,gearbox Hydraulic Cutter Suction Dredge Components ... 3 branches: 1).Weifang Heng'an Group--Dredger Factory It was developed in the 90s of 20 Century. Our ... passed ISO9001:2000 and TS16949 Quality Management System certification,Environment System Certification ,ZC ,CCS and CSQS .It is a leader group in domestic ...