English to Russian Other IT (Information Technology)

Контекст.

Договор об оказании услуг по созданию и разработке веб-сайтов.

A further payment of 40% of the charges due under the contract shall be made by the client to the Company either when the Company provides mock-ups or proofs to the client, or where 50% of the allocated/estimated project hours has been utilised, whichever first occurs.

Заранее благодарю.