Mixed outlook for China's tin production and global analysis .
Sep 22, 2017 . Johnson projected that China's refined tin production in the medium term . Higher mine production in some areas of China such as Hunan and Inner . 136 companies took part; accounting for some 46% of estimated global.
Generally, Chinese mining history can be divided into two periods. . and Shang Dynasties, gold, copper, tin and lead tools and containers have been found. . Modern geological surveys for the mining industry in China began with exploration.