Hi, I'm Jimmy, a senior mechanical engineer working in a multinational enterprise(its headquater is in USA) in China. I have gotten a master degree in mechanical engineering and get more than 10 years experiences in the field of mechanical design, so I can offer the services of convert your pdf files into office(including word, excel) and dwg files.
For the format conversion services, if the original drawing is created from office or dwg files into pdf file, the chrage for this service will be only $5 and finished in 1 day.
But if thre original drawing is a manuscript version or a xerox copy, the amount of work will be greatly inceased since I should use some softwares to regenerate the files, so the charge depends on the actual complexity of the files. In this case, you should send files to me first, then I can review it and offer you the detailed quotation and delivered day.