There is no such thing. To be exact, it should be called customs supervision warehouse delivery. Ningbo, Zhengzhou, Shanghai, Chongqing, Hangzhou, Guangzhou and Shenzhen are seven pilot cities for cross-border import. Theoretically, there are three modes of cross-border import pilot: bonded stocking, goods collection and general import. (This is a plan made by the Ningbo pilot under the understanding of the policy. Theoretically, it is the most in line with national regulatory requirements. Other pilots didn't do very well. At present, most of the so-called bonded warehouses are delivered.