Can anyone advise where to find a proper shop in Seoul MyeongDong..

[Neok]

Hello Bros n Siss

I cant seem to locate a proper shop selling ecig or mech mod...
What is their sign or logo...
Or can I ask those street vendor directly. ..some looks like those 'gu wah cai'...

 

[Neok]

Btw I m in myeongdong now....