Aug 8 (Reuters) - Petro-king Oilfield Services Ltd 2178.HK:
EXPECTS LOSS OF NOT MORE THAN HK$15 MILLION FOR HY
EXPECTED HY RESULT ON DECREASE IN REVENUE FROM PRODUCTION ENHANCEMENT SERVICES PROVIDED TO SHALE GAS FIELDS IN CHINA
Further company coverage: 2178.HK
((Reuters.Briefs@thomsonreuters.com;))