东北证券恢复跟踪海光信息；评级买进

Group 1 - The core viewpoint is that Dongbei Securities has resumed coverage of Haiguang Information and has given it a "Buy" rating [1] Group 2 - The decision to resume coverage indicates a positive outlook on Haiguang Information's future performance [1] - The "Buy" rating suggests confidence in the company's growth potential and market position [1]