iQue is a company that has a long history with Nintendo. Back in the day they were selling iQue-branded Nintendo DS and 3DS consoles in China but due to poor sales, Nintendo decided to change iQue’s role into a development company.
Now it’s been confirmed that iQue is also working on localizing Nintendo Switch games into Simplified Chinese, while Nintendo Hong Kong tackles Traditional Chinese. You can find this information from the credits roll in ARMS.
Note: NHL stands for Nintendo Hong Kong Limited and NOK stands for Nintendo of Korea.