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Yanchengtedadrillingandproductionequipmentco.,ltd
YanchengTedaDrillingandProductionEquipmentCo.,Ltd.,Website:http://www.chinateda.com,whichformernameJianhuMineandPetroleumMachineryCo.,Ltd.andwasreformedasYanchengCityTedaPetroleumMachineryCo.,Ltd.intheyearof2001,isajointventu