单向双向：某些产品的手续费只在开仓时收取，有些则在开仓和平仓时都收取； It's important to check P&L statements from various accounting intervals, as any changes with time come to be a lot more significant compared to the figures themselves. On ne change rien à ce qui est en coach de se passer, mais on modifie seulement son sens. En PNL, on https://kinkyq529dhl2.prublogger.com/profile