When heating and calcining the dihydrate gypsum or chemical gypsum (phosphor gypsum, desulphurization plaster, fluor gypsum), the dihydrate gypsum will be decomposed, we can produce the semi-hydrated gypsum (CaSO4?1/2H2O) , that is building gypsum, also called plaster of  paris.
Because of the different temperature and pressure when decompose the gypsum, we can get different product, α-type gypsum and β-type gypsum.  α-type gypsum is high-strength gypsum,β-type gypsum is building gypsum.
They are the same technology using mechanisation producing building gypsum. The process can be divided into three system, crashing system, calcining system and milling system.

We can supply the full set of service from design, produce, set up and debugging until finished product produced.