The row between the EU and China over solar panels has put the focus on China's overproduction in many areas of industry. Europe says China is dumping solar panels at a price that is lower than the cost of production. Overcapacity is a big problem for China in many sectors. Zeinab Badawi talks to Zhu Min, former deputy at People's Bank of China, now deputy managing director at the IMF. Is the Chinese business model in danger of collapse?