The Federal Trade Commission has made a second request for information from Viasystems Group Inc. and California-based TTM Technologies , which agreed to acquire the Clayton-based company in September for $368 million. Viasystems said in a statement that the request, made under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 , would extend the waiting period imposed by the HSR Act until 30 days after the companies have complied with the FTC's request.