The board of directors of Praj Industries have approved an investment upto Rs 100 crore for expansion including acquisition of an engineering company in USA to enhance business potential in USA.According to a release issued by Praj to the BSE today, apart from that, the company has also earmarked investments into a new R & D Centre, two manufacturing workshops nearer to the port and engineering center expansion at its base in Pune.'The investment programme does not envisage raising any finance and shall be met out of the company's own funds. This expenditure will be carried out over a period of next 12-15 months', the release added.