A system has a storage bin used to hold a product and a product storage rack intended to hold the storage bin. Each end of the line is connected to the other end of the resonator through the first capacitor. The outer peripheral surface has a surface roughness Ra of at least 1 \u03bcm but not more than 20 \u03bcm. Vapor and water generated in existing kettles for beverage flies out through top port of funnel. The method includes providing a boundary based on the display area and the non-display area.