Hi,
Their main business was not ham radio but marine SSB. I think their only amateur radio specific item was the SG-2020 which I think was the baby of one of their ham employees. They did sell a good amount of their external automatic antenna tuners, but those were already being made for marine use.
I suspect that the business might be tight now as there are a lot more factory trawlers and less small operators. And of course competition from overseas manufacturers too.
73.