For two days from June 10 to June 11, 2022, UTokyo Komaba Campus Research Open House 2022 took place and Ouchi Laboratory presented an exhibit on smelting and recycling of nonferrous metals such as precious metals and rare metals, as well as related processes. Graduate students explained the exhibit to visitors. They also demonstrated electroless plating. Visitors were interested in the electroless plating reaction, in which a film is deposited with the generation of bubbles.