You file Injunctions against Corporations not “restraining orders” and neither would be a legal remedy for this matter to begin with.
The remedy would be a seizure of assets ( bank accounts) Rontan holds no US banking accounts so that to would be useless.
Even if a restraining order of some kind were issued the order would be to stop doing business with Rontan which results in exactly zero dollars recovered. So again. Not a viable remedy even if it were done.
You can not take relief against non party company C for a dispute between companies A and B.