Xinhua News Agency, May 30-the market focus stock Ruineng Technology (7 board) opened 8.72% higher, the robot plate Ke Li Sensor (7 days 4 board) opened 1.25% higher, and Jintuo shares (6 days 3 board) opened 0.59% lower. Power stocks Guidong Electric Power (9 days 6 boards) opened 0.61% higher and Hengsheng Energy (4 boards) opened 7.01% higher. Calculation plate Jin Baize (gem 3 board) opened 8.40% higher, Hongbo stock (3 board) opened 4.80% higher, brain-computer interface concept stock Xinzhi Cognition (2 board) bid limit, innovative medical (2 board) bid limit, game stock health (8 days 4 board) low opened 1.04%, supply and marketing agency concept stock Swan shares (6 days 3 board) opened 1.98% lower.