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Baesdonthesurveyin1997fiscalyear,wehavebeenmakingafurthersurveyandstudytogetherwith中国石油(PetroChina)atLiaoheRefinerysince1998fiscalyea
Baesdonthesurveyin1997fiscalyear, Wehavebeenmakingafurthersurveyandstudytogetherwith PetroChina at LiaiaoRefinerysince1998fiscalyea