Maybe what's significant is whether it uses the generic hoses and fittings available anywhere, or the unique Chinese fittings of the Vtec/V2 loader that was put on the VN refurbs.
If the fittings could be Chinese, ask in the Chinese tractor forum where their support comes from. There are firms similar to how Hoye supports Yanmars. I recall the name Affordable as one vendor and there are likely others.
You could post a close photo of your loader valve in that forum and ask if its familiar. Post a pic here, too.