第一封外贸邮件。发给客户，是在广交会上认识的。怎么发比较合适？

我是这么写的，
Dear**，
Do you return your country or still in HK?
This is**! Nice to meet you in HK ASIA WORLD EXPO. Our booth number was ** , Do you still remember?
How about the fair? I hope you have found all the products which you were looking for and everything goes on very well!
Our factory which is a professional manufacturer in Led lights , specialize in Tube Light/Ceiling light/ Spotlight / Washing Wall light /Bulb light/Flexible Strip Light/Panel Light and so on.
Enclose our specifications for your reference and free samples will be sent to you upon receipting your requirements. （可以根据客人具体要什么产品来写）
I highly hope to establish business relationship with you .
Welcome to visit our factory, if possible!
Have a good trip !
Best regards
呵呵，仅供参考，大家可以发表下意见。我们公司去的是香港展。

以轻松的话题聊天切入，加之广交会认识，以后邮件中再慢慢展开，进入正题。