Because this is clean,the net gain of profit and management activity generation exists proper balance, the reason of generation is receivable, the happening of the change of due, cost charge that does not involve cash flow.

• 因此净利润与经营活动产生的净利润就存在一定的差额，产生的原因就是应收、应付款的变化、不涉及现金流量的成本费用的发生等。