I know that OPTI is at this time only tradet on the OTC markets - therefor I asked him for help ...
All I know is:
At this time Optec is traded on the OTC Markets, in the United States. If and when the company decides to trade (list) on another market, a press release and/or an 8K will be filed."
But - Is there a way to change this?
( This way okay to answer? Sorry if I made a mistake )