Wuxi electronic disk lithium carbonate is used in futures electronic disk exchange. All futures electronic trading exchanges are delivered by Chicago Mercantile Exchange, and the designated delivery warehouse is other institutions or individuals. Only some customers' transactions have this qualification, and some are individual investors from the society. They're not trading in kind. They have standardized contracts, not electronic disks registered on exchanges. Among them, the exchange becomes a kind of financial futures. This means that if you don't want to hold a futures contract, you can deliver it to the warehouse of the goods to complete the delivery.