ZAGREB (Croatia), October 22 (SeeNews) – Shares in Croatian blue-chip research and development company for the construction sector Institut Gradjevinarstva Hrvatske (IGH) hit a record high of 16,349.99 kuna ($3,157/2,226 euro) intraday, lifted by news about deals worth some 20 million euro it had struck abroad and a hefty rise in profit, business news portal Banka reported on Monday.