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- Annual Report 2012 00332 - YUANHENG GAS
- Interim Report 2012 00332 - YUANHENG GAS
- Annual Report 2011 00332 - YUANHENG GAS
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- Annual Report 2010 00332 - YUANHENG GAS
- INTERIM REPORT 2010 00332 - YUANHENG GAS
- ANNUAL REPORT 2009 00332 - YUANHENG GAS