Six months. According to official website, a query about Liaoji Bangbangji, joining Chongqing Liaoji Bangbangji can quickly start a successful business, and the investment return period is expected to be only 6 months. Liaoji Bangbangji was founded in 1993. Its products are characterized by spicy and delicious taste. It is a specialty food brand in Chengdu. It has gradually developed from a single mixed dish to a series of mixed dishes, a series of spiced and spicy braised dishes, and a combination of multiple series of products with various flavors.