... , dilatant machine, deaerator, ion exhange unit etc.2. reactor series, including various reaction tanks and fermentaors as electric heat, ... internal pipe heat, jacket heat etc.3. heat-exchanger series, including various heat exchanger, as fixed tubesheet type, "U ... type, floating head type, volume type series, floating pipe type series etc.4. tower series, including filling tower, sieve-plate column ...