～製
～せい · ～sei · JLPT N4 · noun
inch
🏭 製 = manufacture; 日本製 = Japan + made, so X製 = made in X
製 is the kanji in 製造 (seizō, manufacturing). As a suffix it attaches to a place or material: 日本製 = made in Japan, 木製 = made of wood. Sound hook: sei is the label that will SAY where a thing was made.