I am constantly asked of more vendors that report to business credit. People understandably want varied accounts to appear on their business credit. What is happening now is the most common vendors that businesses have used (Office Depot etc) for many years are becoming hard to deal with. They will deliver your product on time no doubt but any questions that a customer asks regarding business credit reporting is given the run-around. Couple that with accounts taking too long to show-up and many people  doubt that the vendor even report anymore. By the way accounts taking too long to report might not necessarily be the vendors fault. Here are some lesser known vendors that report to business credit:

AZ snacks:   http://www.azsnacks.net

Vip Electronics: http://www.vipelectronicscenter.com/

CVS http://www.cvs.com

Remember a business account through all of these.