ZAGREB (Croatia), September 27 (SeeNews) - Croatian diversified group Djuro Djakovic [ZSE:DDJH-R-A] said on Wednesday it has signed a 16.8 million kuna ($2.6 million/2.2 million euro) contract with local oil and gas company INA [ZSE:INA] for the production of parts for its Rijeka-based refinery.