Original text - English - Please confirm that more than half of the...

Please confirm that more than half of the contractors you deal with are not fluent in English, and would not deal with your company if not for the fact that you are fluent in Russian. Is Russian the correct choice?
Please also confirm that your job is correctly titled as a Construction Marketing Analyst; your work experience looks to me like you were directly involved in the actual projects. The job as described sounds more like a research position.