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； The System for each gain metric to the earnings and loss assertion (P&L) is said in the following listing: The stability sheet is usually presented as of the last day of the company’s fiscal year. Buyers utilize the equilibrium sheet to understand the financial toughness of the corporation, evaluating Successfully Submitted (Awaiting Approval)