No. It's mostly advertising. None of them have produced shit.
Tesla being the shadiest scumbag variant, as they tried to keep their factories open like normal while pawning off cheap bpap machines as expensive ventilators in a much publicized Twitter giveaway stunt. Then at the same time claimed they'd be manufacturing ventillators, essentially to confused people into thinking they'd already started making things. When really they bought some old discontinued bpaps (not ventilators, 1/20th of the cost each) and slapped Tesla logos all over the boxes, then hand delivered them to a few NYC hospitals so they could do photo ops for Elon Musk to tweet about. (the same guy who claims the virus concern was dumb and who shares tweets about how things will be normal in a week)