Prosten Technology Holdings Ltd. provided consolidated earnings guidance for the interim period of 2012. The company expected that the group's revenue for the 2012 interim period would decrease as compared to that for the 2011 interim period. As a result of the decrease in revenue and a relatively significant increase in cost of sales, it is also expected that the group's loss before tax for the 2012 interim period will increase substantially as compared to that for the 2011 interim period.