Their domain records say:
tradehill
2415 mission st
san francisco, CA 94110
US
http://s14.postimg.org/ygrtoaodd/tradehillhq.jpg2415 Mission St, San Francisco, California.The mail drop place is 2417 Mission. 2415 is probably above "Wholesale Fashion Shoes".
Thanks a lot for the photo(s).
Did you check whether there was any kind of name plate at that address saying "Tradehill", or "Kenna" ?