Lead Generation List Build

Here at C-therm, we offer lab instrumentation to measure the thermal conductivity of materials. We are looking to build a list in a very specific application area (Thermal Interface Materials (TIMs)). We have generated a very solid mailing list for people in the application area of Thermal Interface Materials ~ 3000. We are looking to add 2000 more people to this list that match this persona. One of the better titles to search for in this application area is "Thermal Engineer" or something related to it. Once accepted, I can share our current mailing list and buyer persona to base this new list on. We need to ensure that there are no duplicates from the original list.