Sir I'm chang I'm 28 yrs old but my height almost...

Hello,
Thank you for your question.
our dear customer

Bone growth:

By the age of 20 for males and 22 for female bone growth stops as the areas responsible for bone growth in the shafts of long bone units together , allowing no longer for bone to grow.
Nowadays there are many attempts by orthopedic doctor to develop ways to increase height, although these producers are highly coast effective and does not give the results wanted for the patients.
Feel free to message me anytime if you have any other questions.
Warm Regard
khaled jaber