④ use 200 #, 400 #, 800 #, machine speed of 500 rev / min to continue grinding. ⑤ then use 1500 #, 3000 # polished surface is polished, then the two machines with heavy rail remove Zhabei stone renovation, the speed is increased from 500 rev / min to 650 rev / min, and finally the stone surface Wash, dry, showing beautiful colors. 10, the weight of the foot, disc withstand pressure: machine weighs 250kg Shanghai stone renovation, the corresponding pressure on the disc up to 180kg or more. High hardness (such as granite, tiles, epoxy terrazzo quartz sand, epoxy floor, concrete) and low hardness (marble, artificial marble) floor at the same time for the machine. 11, user-friendly design: Front electric lifting device (removable disc more humane). Rear vertical force (more ergonomic mechanical requirements) machine leveling device so that each point on the disc even by force of grinding, grinding (block) level of loss. Removable movable armrests, easy easy to operate. 12, buffer damping devices: output rotation is equipped with a compression spring between the shaft and disc, disc grinding encounter greater notches or rugged machine will be a great impact, then stone renovation, spring will cushion damping effect can keep the machine steady grinding, thereby reducing operating mechanic's labor intensity. Xuhui stone renovation | stone renovation | Qin Ze US industry provided by the Shanghai Qin Ze US Industry Environmental Technology Services Limited. Shanghai Qin Ze US Industry Environmental Technology Services Limited (www.qzmychina.com) strong, credible, cleaning and other industries in Shanghai has accumulated a large number of loyal customers. The company better work attitude and continuous improvement Qin Ze innovative ideas will lead America into the brilliant industry and you work for a better future!