Shanghai and Hong Kong-quoted GSI said China StateShipbuilding Corporation (CSSC) is “planning a material transaction related with the company”, it said without going into further detail.

Shares will be prevented from changing hands on eithermarket for eight days between today and 15 April.

GSI booked a net profit of CNY 16.6m ($2.7m) for the 12months to 31 December, up 60% on the total seen a year earlier.

However