Usually,there is a penalty clause in the contract to protect the buyer against loss from delay

Our Inspection Bureau will issue a Veterinary Inspection Certificate to show that the shipment is inconformity with export standards

我们很遗憾，所交货物中一部分受海水侵蚀，质量减低很多，特此奉告。

尊敬的张先生：我方最近收到许多顾客对你方自来水笔的投诉。这些水笔显然不令人满意，且在有些情况下，我方不得不按要求退款。所投诉的水笔属于按我方3月10日第216号订单所供应的那一批。它们中有许多都有毛病。一些漏水，一些书写时会留下墨水渍。接到的投诉只涉及所提到的那些笔。我方去函要求你方接收未售出的剩余部分，并把它们换成以前交易中令我方满意的那种质量的笔。期望不久收到你方的满意答复。xxx谨上

The price you quoted is so non一realistic______we think that your offer is unacceptable______us.

After going into the matter carefully we estimate that the damage might be due to______handling during unloading.

______opening out four or five cases,we find the color is much darker than the sample you sent us.

The buyer claimed USD 1，000______poor packing.

The quality is not equal______the sample.

We have no way but______ask you to amend the L/C,otherwise we can not ship the goods_______ due time.