这种付款条件下，各大神有何高招？

We may need better Terms of Payment to be able to enter into the larger market for these products against the very large Companies with very large Budgets..
We can probably sell in excess of 20,000 units per month.
BUT. Our clients pay 30-60 days from installation.
How can you help this problem??
Talk to your management before answering this question.
OK, can you agree to the following terms of payment:

30% Deposit
70% Payment , 90 days after shipping

备注：客户之前有了解过一达通。但是最后由于本人也没有操作过一达通。客户也没似乎不是很熟悉。 所以最后很多都没成。 难道一达通financing 是个办法？

然后第二点就是和客户去谈50/50 70/30 这个我知道。或者也和相关工厂去谈（谈的结果可能和没谈差不多）

any good idea would be much appreciate！