Shandong drilling machine dials to choose when to pay attention to whether or not it has seismic performance, and is running has a better impact and corrosion, which is characteristic of high quality turntables must have, and only in this way the turntable in order to ensure the efficiency, from effects due to poor-quality turntable to the life of the equipment. After all, in the process of drilling machine in Shandong province, needs Rotary constant motion. And where would like to remind you, for rotating the dial to choose the best choice can be both positive and negative, so as to ensure its long service life.