Try using 百度一下,你就知道
www.baidu.com instead of google.
Most small covenant store might sell 001 AND 002. These small chain store that are
opened 24 hrs. They are also like 7-11 stores. I think it's called MM and and another company called something else.
Next to the Century Hotel in SZ, there is a large sex shop that you should find what you want. Don't know if it
is still around. The last time I walked passed this place was a few yrs ago.