Bulgarian machine engineering company Hydraulic Elements and Systems (HES) said on Monday that it generated sales revenue of 4.68 million levs ($2.66 million/2.39 million euro) in July, in line with its forecast for 4.62 million levs in monthly sales, made last month.HES reported accumulated sales of 39.58 million levs in January-July, up by an annual 5.71%, and expects to generate a further 2.90 million levs in August, the company said in a bourse filing.If the company meets its August sales expectations, its annual sales growth will slow to 3.52% in January-August.HES is part of blue-chip industrial group Stara Planina Hold.