It is a commodity with no substitute.
golden
Whether in futures or non-futures markets, it is an unparalleled hard commodity.
Soft commodity futures
Goods with substitutes
In the futures market
take for example
Soybean oil
tofukasu
Soybean], soybean oil can directly replace hedging, and [rubber RU plastic L, polyethylene PVC] can be related to commodity arbitrage.