三一重工：公司一直高度重视投资者关系工作

Group 1 - The core viewpoint of the article is that SANY Heavy Industry (600031) places a high emphasis on investor relations and actively engages with investors through various channels [1] Group 2 - The company utilizes performance briefings, investor communication meetings, investor open days, on-site research receptions, and investor hotline calls to enhance communication with investors [1]