Hello I am wondering about かつ. I got this sentence below. For context I put the line before the one I am asking about.
Does かつ mean "and" here perhaps? As for the rest of the sentence it's kind of difficult to translate as well, I might be completely off. But maybe along the lines of: More importantly, relying on the professionals of their line of business make the beautiful rationality and economy go around.
edit: I somehow missed the し, after 美しい. That is why I was confused when translating even more..