Liu Jia Market in Dongying sells student mattresses. According to relevant public information, the bedding shops in Dongying District, located at No.85, Liu Jia Wholesale Market West, Dongying District, and Xinyu Bedding Business Department in Dongying District, located at No.202, Jinan Road Liu Jia Wholesale Market, Dongying District, all sell mattresses. There are many kinds of products with good quality, which can be purchased.