China never directly supplied weapons either. Yet its weapons have been found on both sides. The RSF got them through the UAE and the SAF got it through Iran.
If GGP is going to count China as a supplier it's only fair to count the US. Js. Fwiw, both China and the US place sanctions on the RSF and denounce it as a genocide. Neither directly does business with either side.
Russia is involved directly in the conflict however, literally sending in Wagner mercenaries. They used to back the RSF but in early 2024 switched sides and now fully back the SAF. The sad truth is that most major international players don't care about the Sudanese people. They just want to have the support of whichever side comes out on top so they can continue exploiting the gold reserves of the country like they did before the dictator Omar al-Bashir was overthrown by a popular revolution.