True, however that doesn’t necessarily constitute falsehood in what they’re claiming.
The UN also did work on this, as did Canada and some investigative reporters in Europe.
China has lots of adversaries. Mainly anybody in the west, and they dominate any of their other Allies which makes them a de facto leader and would make criticism from anyone else pretty tough.
Edit: oh and in 2015 China announced that they wouldn’t do forced organ transplants on prisoners anymore - so they were most definitely participating in this disgusting practice.