The country's largest machinery manufacturer vowed on Thursday to "fight to the very end" in its attempt to sue US President Barack Obama for blocking its wind farm project in the United States over national security concerns.

Although the chances of manufacturing giant Sany Group winning the case are slim, it signals a new era for Chinese companies seeking to protect their interests in overseas markets through legal means, experts said.

They also warned that the case could have consequences on Chinese investment in the US.