在冲销掉大部分的应收账款之后(在账本上把应收账款转记成不能收回的坏账)，他也停止了向那些欠款客户发货，而且开始实施尽可能地收取预付款的措施和不断更新客户的经营状况。

After writing off most of the balance, he stopped sending new shipments to customers who had a balance due and started getting more upfront payments and staying on top of customers.

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