Common 豆制品 include: 豆腐 (tofu), 豆浆 (soy milk), 豆腐干 (dried tofu), 腐竹 (tofu skin), and 豆腐乳 (fermented tofu). Soy has been a staple of Chinese cuisine for thousands of years.
usage
The pattern X制品 means 'products made from X': 奶制品 (dairy products), 木制品 (wood products).