Heavy early buying of the stock forced the Shanghai Stock Exchange to suspend trading on China Moly shares less than 90 minutes into the session.Changing political winds could help China Moly Another factor that's attracting investor interest to the stock is China's upcoming change in leadership. The country's ruling Communist Party is preparing to hold a congress in November at which current president Hu Jintao will step down and a new leader, likely the country's current vice president, Xi Jingping, will be appointed. Many feel the new president will move quickly to try to boost the country's flagging economy with a new round of stimulus measures. That would be a plus for China Moly because it could spur construction activity, which in turn would increase steel demand. Molybdenum, when added during the steelmaking process, makes steel harder and more heat resistant. Increasing Chinese moly production stokes oversupply fears China is currently the world's largest molybdenum producer. It is also the largest consumer of the metal. In 2011, the country's steelmakers used 168 million pounds of moly, up from 148.5 million pounds in 2010, according to the International Molybdenum Association. However, there are signs that the country's slowing economic growth is having an impact on its steel production. According to the China Iron and Steel Association, Chinese steel inventories were up 26 percent in August from a year ago. Production declined 1.7 percent from August 2011 and 4.8 percent from July 2012. But the country's declining steel output isn't prompting its moly producers to follow suit. China's total moly output stood at 137,127 MT through the first eight months of 2012, up 7.3 percent from the same period in 2011. Its output in August was 16,880 MT, up 13 percent from a year ago. That has raised fears of an oversupply that could send moly prices lower. Already, Chinese ferromolybdenum prices have fallen from 123,000 to 128,000 yuan per MT in early January to between 98,000 and 101,000 yuan in mid-October, according to data from Metal-Pages. On the London Metal Exchange, cash prices have declined from around $29,000 per MT in January to today's level of $24,000.