What are the requirements for Suning mobile phone trade-in?

Trade-in means that when consumers buy new goods, if they can give the same kind of secondhand goods to the store, they can get a certain price discount, and the secondhand goods play the role of discount coupons; If consumers can't submit old goods, new goods can only be sold at the original price.

Suning Shang Yun (SZSE: 002024), the full name of Suning Shangyun Group Co., Ltd., was established on 1990 on February 26th, 65438, with its headquarters in Nanjing. China is a chain-type household appliance sales enterprise, formerly known as Jiangsu Suning Appliance Co., Ltd. and Suning Appliance Co., Ltd..