...
1. Download the file with the words used on the site to translate them: http://data.otcommerce.com/public/translate/site-oplangs_translates-en.zipxml;
2. Download the file with the words and phrases that are sent from OpenTrade Commerce services: http://data.otcommerce.com/public/translate/ot-services-engen.zip;
3. Replace Russian / English words and phrases in the downloaded files with the texts in desired language and make respective corrections in the contents of the files of language-pack.zip archive;
...