public Result QueryQiyeAccountBalanceInterface(string requestNumber, Req_4001 req_4001, string counterId = "")
        {
            var be     = new BankEnterpriseDirectInterface(this.IsSpecialLine);
            var result = be.QueryQiyeAccountBalanceInterface(requestNumber, req_4001, counterId);

            return(CommUtils.ToResult(result));
        }