Milwaukee-based Sun Cleaning Systems, 3889 N. 1st St., has made this year's "Inner City 100," a list of America's fastest-growing urban businesses.

For the past nine years, Inc. and the Initiative for a Competitive Inner City (ICIC) have teamed up to recognize America's fastest-growing urban businesses through the annual Inner City 100 list.

The 2007 Inner City 100 is out today (online and in print) and its boasts an average four-year revenue growth of 535 percent and record average revenue of $39 million. Nine percent of companies report sales exceeding $100 million.

Sun Cleaning Systems is the only Milwaukee company on the list. Detroit led with six. TerraHealth, in San Antonio, topped the list.