如何写英文邮件给外国公司？？

dear sir/madam,
I was very interested in the software you are developing, could you please give me some guidance for purchasing or please give me some contact of the local agency in China, thanks!

大概意思就这样，我觉得没有必要写太多无关紧要的措辞，直接讲重点就好。希望可以帮到你！不过你要在邮件里面写明你要的是什么软件，不然人家可能会当你的是垃圾邮件直接处理掉的哦！祝你好运！