Supply of aluminum sheet material five areas of excess output-supply of aluminum sheet material ceramic aluminum plate punching aluminum plate aluminum ceiling NET strong aluminum plate carved aluminum profiled tile Luo plate aluminum sheet materials and other products five areas of overcapacity analysis "from 100 million tons, by now 800 million tons, still talking about overcapacity, the Deputy Secretary-General of the China Iron and Steel Industry Association in an interview with China investment. Compared to, CISA issued at that time, China's steel production capacity has reached 800 million tons, but the practice of the compliance of steel production capacity of only 400 million tons, there are 400 million tons of capacity without the country approval. Since 1999, when the cap was put on, the steel industry's capacity has been constantly expanding as demand has increased. On the basis of the demand forecast, the country to the steel industry capacity expansion constantly serious planning, but because of the need to break the planning capacity, so the market capacity also repeatedly break the national planning. such as 2009 years of the State Council, "steel property adjustment and ZTE Planning" in the prediction of China's crude iron consumption of 430 million tons, but in practice consumption amounted to 570 million tons. CISA estimates that the consumption of crude steel will reach 680 million tonnes, while the country agreed to 400 million tons of iron production capacity at that time, and 400 million tonnes of illegal capacity in the market will compensate for the demand gap.