February 21 (SeeNews) - Bulgarian machine engineering company Hydraulic Elements and Systems (HES) [BUL:4HE] said on Thursday that its sales revenue rose by an annual 16.14% to 6.6 million levs ($3.8 million/3.4 million euro) in January, slightly exceeding its forecast for sales of 6.55 million levs in the first month of the year.