I would suggest you do your research on the company first. For example, how long have they been around, and also if what they are offering seems "realistic" I know there are ways for a small business owner to obtain decent size credit lines in the form of credit cards etc. and it certainly can be done strictly with the use of business credit.
However one should obviously be skeptical if a company is promising to get your small business $200,000 in the matter of a week or so, that should be the first sign of Scam.
Try doing a Google search for Strong Business Credit, and always begin by calling and asking questions to an expert.
First of all, how old is your business?? I highly doubt that to establish business credit that they don`t pull from your personal credit background and worthiness. If your business is less than 2 years old, you more than likely will always have to provide a personal guaranty. Almost all credit programs require this unless the company is 2-3 years old.
If you are a LLC, then be prepared as most business credit programs will always require a personal guaranty as well. Regardless, you should research the background as to where you are trying to obtain credit. Definitely know what your personal credit score is. You can get a free credit report at: www.freecreditreport.com.