The company's independently developed and produced KY-250D diesel full-hydraulic rotary blasthole drill rig was successfully installed, debugged, and delivered to the customer for use in Davorakuta, Russia, in January this year. Despite the extremely cold weather of-45 degrees Celsius,the equipment can still operate normally and with high efficiency(the fastest drilling speed reaches 4.5 m/minute). Its excellent performance has also been recognized and praised by the client's at the mine.