Cao, that is also correct. All OTC listed stocks are de-listed stocks.
The OTC is where exchange stocks that are de-listed drop to.
When an exchange stock is de-listed to the OTC, they have a choice of which de-listed tier to trade on, OTC current, Stop sign, CE or any of the others tiers.
A company cannot be de-listed from the OTC because all OTC tickers are already de-listed.
:)