The Tangshan area lies in the North China plain where an Ms 7.8 earthquake occurred in 1976,which is associated with a hidden active fault.To reveal the recurre
According to news from the China Petroleum and Chemical Industry Federation,the crude oil output in China for 2012 was expected to amount to 207 million tons,li
There are two production areas for vanadium-titanium magnetite deposits in China:the Panzhihua area in Sichuan Province and the Chengde area in Hebei Province.