China is the biggest producer and consumer of based metals in the world,as well as the biggest raw materials importer.Driven by the rapid development of China's economy,domestic base metal production and consumption kept high growth rates in the past 5 years.However,feeds shortage is bottle neck of base metal industry development.And price fluctuation also impacts the development of base metal industry.This paper discussed the supply,demand and price of based metals in the past 5 years,and forecast the outl...