If Chinese companies eventually end up bidding for Urenco, there is no reason why Indian companies should not do so. India can form a joint-venture with counterparts in Brazil, South Africa and, if needed, China (even Russia) using common interests envisioned through forums like the IBSA or BRICS to enter this race.
The US-Iran Deal and the Outcome
The interim deal was signed by seven foreign ministers of US, UK , France, Russia, China, Germany and Iran but the deal was not negotiated mainly in Geneva, but in Muscat and other locations where the US and Iran met secretly for months. Essentially, it is a deal between US and Iran and the rest were there to serve a choreographic purpose.