... and testing poolsQingzhou Haiyang Ore Machinery Co.,Ltd.1. Located in Qingzhou City,Shandong2. Five workshops3. One office building for ... engineers4. Established in 1992,for 20 years in dredger suplyiing ,designing,installing and training5.Good reputation for ... necessory tools, tackles, plants and machineries required for the installation, testing and commissioning of silt dredging ...