In the Q&A, Dawson said a key takeaway was what happens when quarterly sales rise above roughly $19 million to$20 million, as fixed overhead and labor are absorbed and incremental revenue contributes more meaningfully to the bottom line. He also said the quarter benefited from some orders being requested to move up.CFO Peter Yin said fourth-quarter gross margin rose to 37% from 31% a year earlier, driven by higher sales and a more favorable product mix. Operating income was $903,000 versus$96,000 in the p ...