Is Ao Bai shark cartilage powder available only in Beijing?

There seems to be one at the Capital Airport, but there are fewer pharmacies. Only pharmacies in Fujian Province sell them. But you can order it by phone and deliver it to your door for free. My father ate it and it worked well. I can't feel any pain now. You can also buy it online. But I think it's safer to order by phone. Because there are too many fakes in China. A little uneasy.