I want to know the answer to the following question:
Which company continued to use gas-lasers in industrial models of LD players although they were no longer used in consumer models?
All the background I'm provided with is that "One year earlier Hitachi introduced an expensive industrial player with a laser diode, but the player, which had poor picture quality due to an inadequate dropout compensator, was made only in limited quantities.". Is that enough to answer the question?