There are many reasons to write a company profile: You can use the description on your website, in a One Sheet, on your company brochure - even as background text if one of your executives is giving a speech. Company profiles should be modified and updated every year. (If you are using it for website text, it should be updated more frequently with emphasis given to keywords or search terms used in your industry).
By having a company profile that shows off your expertise, you will feel confident in distributing it in the various formats in which you showcase it and your PR value will increase.
Call me when you need a company profile written.