No offence, but there are many types and most case manufacturers do not have website for cases.
What are you after? The case is just the box that everything screws into.
Are you after info on the motherboard, which is the "heart" of your computer?
If it is the motherboard, then look for some letter/number combinations which you can post here and others will help. some examples of what to look for are GA-7V , MS5476 , N3467