I have a big experience with projects of this kind as I've been collaborating with advertising and public relations companies for some time now. I am also extremely qualified for working in very tight deadlines as I've been working in the promo and trailer department of a nationwide TV Network were speed and quality is of utmost importance.
You can check my portfolio as I am new to this site.
As for the project:
You will need to provide me the visual id of your company (logotype, slogan, etc) in vector (.ai, .eps) format or layered bitmap of high resolution (.psd, .tiff).
If there is a script that will need to be provided too. If not a structure of the presentation as you imagine it will be very helpful and will save time and effort. If you can not provide either I can offer you a rough concept script and have a professional copy writer edit and refine it after you agree to it.
Second stage will be spent on recording and preproduction (graphic elements design, prerenders, sound design, music score etc).
A day or so after that you will have a playable demo. Low resolution so you can make any final corrections and suggestions.
At least 1 day (6-7 hours) is held for final corrections and final HD rendering.
You will receive your video in any resolution and format you wish via FTP or other large files transfer client such as Wetransfer after the final payment.