Recently, it was organized by the Double Star Group Technology Development Center, co-chaired by Qingdao City Economic and Information Technology Commission and Qingdao Science and Technology Engineering Consulting and Research Institute, China Petroleum University, Shandong University of Science and Technology, Qingdao University, Qingdao University of Science and Technology, and Qingdao Ocean Research Institute and other universities and colleges. The expert appraisal committee composed of experts for new products and new technologies identified the six scientific and technological achievements of the Double Star Group. The unanimous opinion is that the "Super Green Color All-steel Radial Tire Development", "17.5-inch Metric Low Profile Inner Tube Radial Tire Development", and Double Star Rubber Corporation's "Semi Steel Tire Hydraulic Intelligent Fixing and Sulfurizing Equipment" "Technology development and application", "Highly efficient semi-steel radial tire forming system", Double Star Casting Company's "Research and Application of Vertical Parting and Boxless Radio-Pressure Automatic Molding Equipment Technology" and other five projects have reached the international advanced level; double star forging The company's "YAG solid laser cutting equipment development and application" project has reached the leading domestic level and has enhanced the market competitiveness of the Double Star products. Generator With Cummins Engine,Cummins Generator Set,Cummins Diesel Generating Hiersun Machinary & Equipment Co., Ltd , http://www.tzgasolineengine.com