Twenty years the United States, Europe, Japan, Korea abundance of cheap imports from China rare earth as their strategic reserves, these homes not only through the purchase of government funding over the treasury which is stored in its own way but also by investing in Chinese law to circumvent development of rare earth and rare earth resources in China valuable compete to lower prices due to disorderly competition becomes increasingly reduced export production from China to buy rare earth opposite country's own resources are scarce, but not all countries.