写一封英文商务邮件,内容大概是王先生从你公司订的货物库存不足,现有两种同类其他货物可供选择.

Dear Mr.Wang,
I am sorry but i have to regret to tell you that the quantity of our stock cannot fulfil your order.We have stock of other goods of the same type for your options.Please advise if you continue to order to fulfill the quantity.
Please note for that.Look forward to your reply.