In 2005, China's output of nanometer calcium carbonate reached 250,000 tons. In consideration of the big number of projects under construction or to construct, it is predicted that China's nanometer calcium carbonate productive capacity will reach 1.90 million tons by 2010 and the output will exceed 1.30 million tons. While at that time the domestic demand is predicted of only 750,000 tons, so it is unavoidable to overstock and the price is very possible to go down drastically. Experts say that will be an opportunity to update the packing material in the plastic industry.