I am 26 year old having hair fall problem since more than 4 years

Hi, 

I am heard from my friends in china ,for prevent. hair fall and. re- growth new hair .if any body know about treatment let me know .

My current location shanghai ,pushi,cayong road ,shanghai.

Please let me know if any good product available in China market for hair fall protection and new hair growth .or good doctor consult suggestion accept here .

Thanks