342.We promise to give our best attention to the execution of your order.

343.We regret that owning to the shortage of stocks we are unable to fill your order.

344.We feel great regretful that we can no longer supply the goods your ordered as the production has been discontinued since last August.

345.It is hard for us supply the amount you need.

翻译:
我方会尽力执行贵方的订单，让您满意！

我们保证认真执行贵方的订单，敬请放心。

由于存货短缺，很遗憾，我方无法供应贵方所需货品。

很抱歉，我们不能向贵方提供所订货品，因为从去年8月起，该产品就已经停止了生产。

我方很难提供你们所需的量。