Shenzhen-listed Zoneco -- formerly known as Zhangzidao Group -- announced a full-year loss in 2017 due to the poor quality of its scallops and challenges from foreign markets, reports Global Times.

In a filing with the stock exchange, the company estimated a loss of CNY 530 million (€67.7 million/$84.2 million) to CNY 720 million (€92 million/$114.4 million) for the last financial year.

It suspended trading of its shares on Wednesday, with trading to resume no later than Feb. 5.