Questions to ask before buy a food freeze dryer

Knowing the eutectic temperature(freezing point)?

Input capacity and output capacity?

How many kgs or liters raw material need drying per batch?

Or how many kgs freeze dried products is need?

Heaviest water in raw materials? Or moisture percentage in raw material?

Raw material loading way? Direct/bulk in trays or in special package?

If in special package we may also need the package size.