The answer is actually **C**. The proprietary firing process Toto perfected for its ultra-smooth toilet glaze is the exact same material science required to create Electrostatic Chucks. These ceramic plates use a static charge to grip silicon wafers with zero physical movement. If the ceramic isn't perfect, the wafer slips. If it slips by even a few nanometers, a $150 million lithography machine etches the circuit in the wrong place, turning a $50,000 wafer into a useless coaster.