product design review

We are an engineering company in the Northeast with offices in MA & VA. And we have suppliers in many states in the USA, and some outside. We have situations where we want engineers from our 2 offices, sometimes co-development partners and, more often, suppliers to review designs and provide written feedback and/or preliminary quotes or DFM issues. We do not want to open up our PLM system to anyone outside.

If you or your company have faced this issue and have implemented a solution, I would appreciate if you could share some details about your experiences.

Thanks
Kristin