30g just doesn't make any sense IMHO but TBF that's speaking from a binary / base 10 background. Maybe in China it's different? But I'd have gone with 25g if I were changing the standard sizeIn my view, the Chinese Panda coins going from 1oz to 30g is the same as government approved coin clipping. I doubt any of us are surprised silver bars have been filled with lead, shady companies taking off with people's cash, and the possible connections to the CCP.