Drawing Mark-Ups or reference files are provided and then transferred to AutoCAD DWG’s. PDF files, of all revised or created Drawings and Back Check, are sent for Client review. Upon final approval, we then send the electronic Drawing files. When it comes to creating Drawings we have a vast library of typical P&ID Symbols, Installation Details, Loop DWG’s, Wiring Diagrams, etc. There is clear communication via e-mail or phone during the entire process.