The price of any commodity is affected by the supply-demand relationship.
任何商品的价格，都会受到供需关系的影响。
2
Pay attention to the price of a commodity, its use or the traditional concept of "value" is not necessarily a direct relationship.
留意一件商品的价格，与其用途或传统观念的“价值”并无必然的直接关系。
3
In this paper, based on aluminum, we study the inter-relationship between the commodity futures price and the stock price of the listed company in the supply chain upstream and downstream.