As
@Liska touched on, it seems the export or at least gathering of Livzon hCG in China became greatly restricted. For vendors like myself that were able to stock it before, our suppliers were previously able to obtain as much as needed and send it to us without issue, but they've reported that they're limited to purchasing only a few boxes at a time. Additionally, we've heard rumours about tightened export restrictions in China, with the State not being too happy about medications being sent abroad during various supply shortages.
It's worth noting that a few sources do have HPLC tested hCG available, should you be looking for it. Would you be open to a different brand should it be lab tested to demonstrate equal efficacy for a pharmacy grade product?