The conference began with a speech by Wang Xing, Director of the Dunan Group Board of Directors and Chairman of Dunan Heavy Industry. He recounted Dunan Heavy Industry's development journey of relentless pursuit of excellence, from developing China's first full-casing full-rotation drilling rig to becoming the country's largest R&D and manufacturing base for full-rotation full-casing drilling rigs with the most complete range of product models. He stated that Dunan Heavy Industry has always regarded technological R&D as the core competitiveness of the enterprise and has invested continuously in it. Keeping a close eye on the international technological frontier, Dunan Heavy Industry, through close cooperation with research institutes, has developed full-casing full-rotation drilling rigs with completely independent intellectual property rights, breaking through the technological blockade of developed countries and achieving a number of domestic and international firsts.