The same cylinder can be equipped with three kinds of troughs: CTS (CTS) selection size ≤6MM, CTN (CTN) selection size ≤0.6MM, CTB (CTB) selection size ≤1mm
The same cylinder can be equipped with three types of tanks: along flow tank (CTS) with particle size ≤ 6mm, counter flow tank (CTN) with particle size ≤ 0.6mm, and half counter flow tank (CTB) with particle size ≤ 1mm