The metal price cycle is determined by the economic cycle and reflects the economic cycle.The fluctuation of metal price almost synchronizes with the fluctuation of the global GDP growth rate.

• 摘要经济周期决定了金属价格周期，金属价格周期反映了经济周期，金属价格的波动与全球生产总值(GDP)增长率的波动几乎完全同步。