What's a pregnancy ring? Professor Chenfenglin pointed out: The pregnancy ring is a kind of environmental surgery for the outer cervix. The success rate is low, the irritation is large, and the efficiency is less than 20!
The condition that the cervix ring is done after pregnancy has been replaced by cervix banding. We call the biological hoop also known as the Antai ring. It is the place where the Antai ring is buried in the cervix, and it is directly placed like a ring in the cervix. The bearing capacity of the biosphere is very good and the effect is guaranteed.