There is another one who also has a vaccine getting ready to be tested. Moderna Therapeutics also came up with theirs quickly.
They are working from the vaccine created for the original SARS virus. This one is actually SARS-CoV-2 (SARS-2). This is why they hope this vaccine will work and they were able to get it so soon.
I do not know about that company but I know the one I listed is indeed working on a vaccine. Based off of the one they created for the original SARS virus.