On April 21, the 49th Geneva International Exhibition of Inventions closed in Geneva, Switzerland. This year's invention exhibition attracted more than 1,000 invention projects from nearly 40 countries and regions. The Chinese delegation brought 197 inventions to the exhibition and won a total of 70 gold and 97 silver awards. Xuzhou Jingan Heavy Industry Machinery Manufacturing Co., Ltd. exhibited full casing full rotary drilling equipment won the invention exhibition silver award.