About English Gramma
Where and which will company calibrate the tools?
Where and which company will calibrate the tools?

Which one is correct?

Question

About English Gramma
Where and which will company calibrate the tools?
Where and  which company will calibrate the tools?

Which one is correct?

Answer

Neither. 
i think you are trying to ask two questions:
Where will the tools be calibrated and which company will do it.
Where are the tools being calibrated and by which company?

Answer

"Which company will calibrate the tools? Where will they do it?"