BRTHCOVCo is an authorised agency for document preparation. I used their services
and I recommend them.

Great agency who care about preparation and legalization of your documents for a job. Have really honest, friendly consultants who are always contactable by Internet and answer carefully on every your question. Last but not the least their fees are lower than the other companies' offers, which I know. I was BRTHCOVCo's customer and recommend them!