1, Chenghai RT Mart Supermarket: Located in Gangkou Middle Road, Chenghai District, it is a large supermarket chain with rich products and sufficient supply. It is one of the well-known wholesale channels of foam boxes in rice rolls in Chenghai area.

2. Chenghai Vegetable Wholesale Market: Located in Xiong Feng Road, Chenghai District, it is a vegetable-based wholesale market. However, there are also businesses operating wholesale foam boxes in rice rolls, which have advantages in price and supply.