客人必须在过程前付钱，不能过程后付。
Guests must pay before the procedure, cannot be paid after the process.
制作后付电视广告需要很长时间，比如：我们不必为了后付产品推广而停下新的电视广告，这样节省了成本。
When we do postpaid TV commercials, this will run for a very long time and as such there is cost savings since we don't have to cut new TV commercials for postpaid promotions.
确定你有一份付款进程表并确定你的客户知道你希望什么时候付款。可以是一月一付，可以是完工后付，也可以是某个间隔时间付。
Make sure you have a payment schedule in place and make sure your clients understand when you expect to get paid. It could be once a month, up-front, upon completion or at a different set interval.
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