Goma three star balls are made in China, Shanghai to be exact. I got some this past month to try. They were purchased in Hong Kong and is much cheaper than DHS. I want to compare them so that the next time I may buy more if they are satisfactory.
I find Goma stable when spining on a flat surface and hardness and feel very close to DHS, might be because they come from the same place. They color of the yellow is a little warmer than DHS. The ball overall plays very similar. It last very well also, but the quality control of the Chinese product is not the best, so I try not to draw any conclusion from playing just the few. For the mony I would buy Goma instead of brand name.



