英语翻译

my receiver:
You received your letter of November 21,thank you,we have the su ly of this morning.
From our telex FangLiang you already know,we can be a firm offer 250 long tons of steel tube London cost,insurance and freight ￡6.2 per long ton,after receipt of your order,delivery within two months.For payment by sight l/c.The offer is subject to your reply within a week for effective arrive here.
You know,the recent market demand for steel,so we can't keep this offer open for too long.Demand is big,it is inevitable that rises to cause your attention,at the same time,please you soon