你好，Joyce.Chang :
我是黎军，北京壁虎传媒（Bihu Media）的。我们壁虎主要是做游戏内置广告（In Game Advertising），就是在网络游戏里植入咱们公司的产品广告
您也知道，目前受金融危机的影响，很多公司开始缩减大幅的广告预算，如何让自己的品牌通过花少量的广告费用能精准的到达产品目标消费群已经成为很多公司研究的课题。而网络游戏恰恰可以解决这一问题。首先，网游人群众多，其次网游玩家年龄普遍集中在18-25岁之间，再次网游玩家具有时尚、叛逆、易接受新事物的特点。
所以今天跟你联系就是想把这种新媒体介绍给您，看看是否有合作的机会。

你好，Joyce.Chang :
Hi Joyce (如果要求很正式则写Dear Ms. Chang)

我是黎军，北京壁虎传媒（Bihu Media）的。我们壁虎主要是做游戏内置广告（In Game Advertising），就是在网络游戏里植入咱们公司的产品广告
This is Li Jun from Bihu Media, Beijing. Our company specializes in in-game advertising, i.e. implanting advertisements of our products in online games.

您也知道，目前受金融危机的影响，很多公司开始缩减大幅的广告预算，如何让自己的品牌通过花少量的广告费用能精准的到达产品目标消费群已经成为很多公司研究的课题。而网络游戏恰恰可以解决这一问题。首先，网游人群众多，其次网游玩家年龄普遍集中在18-25岁之间，再次网游玩家具有时尚、叛逆、易接受新事物的特点。
As you may know, many companies begin to cut back on their advertising budgets due to the impact of the current financial crisis. It becomes a research subject for many companies that how to bring their brands right to the target consumers by investing cost-effectively in advertising. Online games should be the very right solutions. First, online games are very popular. Second, the age of most online gamers is between 18 and 25. Third, these gamers are characterized by their love for fashion, individuality and readiness to accept new things.

所以今天跟你联系就是想把这种新媒体介绍给您，看看是否有合作的机会。
I'm emailing to you to introduce you to this kind of new media and looking forward to any opportunities for cooperation.