A company in Pakistan purchased a set of multi-rotor classifier system from us

A company in Pakistan purchased a set of multi-rotor classifier system from us. The technical requirements were as follows:
 
Being trusted by our customers, we provided them with sufficient experimental data as well as on-site cases for reference. Our expertise and customers’ trust in us contributed to a fast purchase order.
The basis of limestone powder is calcium carbonate. High-quality calcium carbonate powder can be used in the paper industry. The use of nano-calcium carbonate in the paper industry has the following advantages: 1) The whiteness and light-shielding properties of paper products are significantly improved; 2) Nano-calcium carbonate has less wear on paper, making paper products more uniform and smooth; 3) Reduce the amount of pulp and increase the amount of fillers, reducing production costs; 4) Nano-calcium carbonate has good oil absorption, which improves the pigment fastness of colored paper; 5) When filling neutral paper or cardboard, nano calcium carbonate can improve their compactness. At present, nano-calcium carbonate is mainly used in thin printing paper, recording paper, high whiteness art paper, cigarette paper, paper diapers, high-end sanitary napkins, etc. Nano calcium carbonate can also improve the apparent fineness, bulk density and water resistance of paper; improve the printing speed and strength of special paper; adjust the burning speed of cigarette paper, etc.