The so-called hedging is the "spot" mentioned in your question. If the current price is favorable to the spot or the manufacturer, you can open a position to establish a short position.

In addition, people who are not optimistic about the upward trend will of course open short positions. Don't wonder why someone will open a short position in the rising trend, because every price is easy to get out of the market, and naturally it has its reasons for existence.

Of course, in the case that it is obviously not conducive to the empty side, the price will not change so smoothly, but it will show a fierce big yin and yang, a gap and even a daily limit. . .