Inability to Supply 无力供应
1)We very much regret that we are unable to supply what you require just now. 我方无法提供你方现在所需货物，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. 谢谢你方...月...日来函中所述，很抱歉，现在无法向你方提供...。
3)We regret that we are unable to supply you with the small quantity you require. 我方歉难供应你方所要求的小批数量。
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. 我方已记下你方对....的要求，目前歉难供货。一有现货可供，我方将立即电告发盘