 Major agricultural products are rice, tea, tobacco, sweet potatoes, and soy; also, silk is widely produced.The island is noted for various types of porcelain, including Arita, Imari, Satsuma, and Karatsu.Heavy industry is concentrated in the north around Fukuoka, Kitakyushu, Nagasaki, and Oita and includes chemicals, automobiles, semiconductors, and metal processing.