1)We very much regret that we are unable to supply what you require just now. 我方無法提供你方現在所需貨物，甚歉！
2)While we appreciate what you stated in your letter of..., we regret that it is impossible for us to supply... for the time being. 謝謝你方...月...日來函中所述，很抱歉，現在無法向你方提供...。
3)We regret that we are unable to supply you with the small quantity you require. 我方歉難供應你方所要求的小批數量。
4)We have taken due note of your requirements for... but regret being unable to supply at present. We will certainly fax you an offer as soon as there is stock available. 我方已記下你方對....的要求，目前歉難供貨。一有現貨可供，我方將立即電告發盤。