Holcim Romania, a unit of the Swiss cement company Holcim Ltd., said on Thursday its first-quarter turnover rose 10 per cent year-on-year as a result of higher demand on the local cement market.  Holcim Romania posted Euro 16m in sales through March, the company said in a statement. The company did not disclose profit/loss figures.  Its 2004 turnover reached Euro 130m, up by 30 per cent. Projections for 2005 forecast its growing by some 10 per cent. The cement market was estimated at some Euro 280m last year.  The company has three cement plants, three aggregate quarries and 13 concrete plants.