1. Different futures varieties have different requirements for the cancellation of warehouse receipts. The longest nonferrous metals such as copper, aluminum, lead and zinc have no cancellation time, and the warehouse receipt of rebar is only valid for 90 days. . . You can go to the websites of various futures exchanges for details.

2. Within the validity period, the warehouse receipt shall not be cancelled, but a storage fee shall be charged.

3. The warehouse receipt can offset the deposit, and the general offset rate is 80%. The bank will charge a loan interest rate of about one-year benchmark, and the safekeeping fee will also be borne by the mortgagor.