On 07/06/2013, HNX officially admitted the delisting of THV:

Name of issuer: Thai Hoa Viet Nam Group Joint Stock Company
Stock code: THV
Securities type: common stock
Reason for delisting on HNX: accumulated loss as of 31/12/2013 is –VND622,543,855,512, higher than capital (VND577,499,950,000)
Total delisted volume: 57,749,995 shares
Total delisted par value: VND577,499,950,000
Delisting date: 04/7/2013
Last trading day on HNX: 03/7/2013