July 22 (SeeNews) - Croatian pension fund manager Raiffeisen Mandatory and Voluntary Pension Funds Management Company, acting on behalf of Raiffeisen Mandatory Pension Fund Category B, raised its stake in local blue-chip manufacturer of plastic components for the automotive industry AD Plastik [ZSE:ADPL]Â to 17.12% after purchasing an additional 2.51% last week, AD Plastik said.