If you bought one of these products and want to be sure it is genuine just go to official manufacturer site and verify there supplier (by URL) or product by ISN.

Kalpa Pharmaceuticals

http://kalpapharmaceuticals.com/

Axiolabs

http://axiolabs.com

British-Dragon

http://british-dragon.com

Dragon Pharma

http://dragon-pharma.com/verify-your-supplier/

Sciroxx

http://sciroxx.com

7Lab Pharma

http://www.7lab-pharm.com/

SP Lab

https://upic.sp-laboratory.com/