1. Looking at supply, supply cost is very important, including raw material cost, energy cost and labor cost.

2. In terms of raw materials, iron ore is the most important raw material in rebar production, which is divided into imported ore and domestic ore. In terms of energy, coke is an essential reducing agent, fuel and material column skeleton in rebar production.

3. From the demand point of view, rebar is widely used in civil engineering such as houses, bridges and roads. Iron and steel industry is a typical cyclical industry, and its price fluctuation is closely related to the economic cycle.