Prosecutors on Monday raided the headquarters of leading contractors Kajima Corp. and Shimizu Corp. in Tokyo over an alleged antitrust violation in connection with maglev train construction tenders.Kajima and Shimizu are among the four major construction companies that won contracts to build the ultra high-speed train line that will connect Tokyo and Osaka, about 500 kilometers west of the capital, in about an hour.The companies are suspected of conspiring to determine which contractor will win orders ahead of the bidding. The special investigation squad of the Tokyo District Public Prosecu…READ FULL ARTICLE