Quote Originally Posted by Antonio1986 View Post
Privet.
How do you say in Russia:
1. I have an expertise on (the analysis of) International Trade.
2. I have an expertise on (the portfolio management of) High Net Worth Individuals.
3. He is an expert on genetics.
4. He is specialized on Chinese Customers.

Also can someone please tell me how you can say in Russia: I ranked first in the university/class/contest (i.e. I had the highest mark).
Well, this is a very difficult question. I'll try to help you with that but I'm not 100% sure of the result though. Okay, let's do that.

1. У меня есть знания и опыт по международной торговле - I'm pretty sure about this one
2. У меня есть знания и опыт по составлению портфолио для людей с высоким достатком - not sure about с высоким достатком part. Sounds more like "with high income to me"
3. Он эксперт по генетике or Он эксперт в области генетики - 100% sure about this one
4. Он специализируется на покупателях из Китая - quite sure about this one

I hope this helps in any way