Review and check sales contract, recognize the sales. Project cash inflow follow up. Computation of commission and consulting fee.

负责销售合同的审核和保管。及时准确地确认收入，负责项目回款情况的跟踪。负责计算销售佣金和运费，咨询费。

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Since American Express brings higher spending consumers to merchants, it can charge a higher commission (known as the interchange fee) on sales.

FORBES: American Express Thrives On Women And Tech

Advertisers cough up a sales commission, whenever a user buys a product via Zango, or a cost-per-visitor fee.

FORBES: Mr. Manners