I suggest the Japanese technology we dealt with it when er were students, they have good techno and they can provide free training on the machine, unfortunately I have forgotten the company name . you can google and feed me back I might remember the company
we are using a lab scal benchtop freeze-dryer from the US company Labconco (http://www.labconco.com/product/freezone-6-liter-benchtop-freeze-dry-system/117).