THE Wiraraja Group is getting ready to welcome investors. On Monday, June 5, the firm managing the Wiraraja Industrial Zone in Kabil, Batam, Riau Islands, is to sign a joint investment agreement with six energy companies. “Investment in our industrial zone will be inaugurated by Coordinating Minister for the Economy Airlangga Hartarto,” said Wiraraja Group Chief Executive Officer (CEO) Akhmad Ma’ruf Maulana to Tempo on Friday, J