It can be understood as the meaning of those supplementary orders. If an order is a supplementary order, it is equivalent to an order that was not completed at the beginning. You can make up this order by replenishment, which is equivalent to your own order quantity. If you reach this order, you may achieve better sales results.

Futures (English: futures) are the subject matter that is bought and sold now and delivered in the future. This subject matter can be gold, crude oil, agricultural products, financial instruments, financial indicators and other commodities. The delivery date of futures can be one week later, one month later, three months later or even one year later.