O-Net Technologies (Group) Limited provided earnings guidance for the year ended December 31, 2019. The board of directors of the Company informed the shareholders of the company and potential investors of the Company that, based on the preliminary review on the information currently available to the Board, it is anticipated that the net profit of the group for the year ended 31 December 2019 may decrease by more than 50% as compared with that for the year ended 31 December 2018, which was mainly attributable to (i) lower-than-expected sales of EDFA, one of the Company's core products, which caused a decrease in gross profit margin; and (ii) the impairment of certain assets, including inventory and intangible assets.