This customer contacted our company in 2017 and inquired about calcite powder making plant for 20-80microns powder production. He contacted many suppliers and compared the different prices, quality, services., etc. Finally after 3months’communications, they chose ZENITH and placed the order for one XZM221 ultrafine mill to us. Before shipment, they came to our production base for inspection. The final powder is mainly used as dry mortar, filler, wall putty., etc.