英语翻译"中国华东地区唯一的水泥论坛"

The exclusive cement forum in East China

这样就可以了，这里用exclusive好点

(新闻等)独家的;(商品等)独家经营的;(式样等)独一无二的
The reporter had an exclusive interview with the Nobel prize winner.
那位记者独家采访了那位诺贝尔奖得主。

the only cement forum in East China

the exclusive cement forum in east China

The only one cement forum in East China