According to the latest survey report of American market research company NanoMarkets, by 2012, the market for electronic ink and related substrate materials used in the printing and electronics industry is expected to grow to 7.7 billion dollars. NanoMarkets also pointed out that with several companies stepping up their mass production in 2007 and 2008, the printing and electronics industry is gradually stepping up to an exciting new level. Nano silver paste ink has many advantages, including: improved conductivity, lower temperature curing and more fine line printing, but the price is more expensive. NanoMarkets estimates that its premium will be gradually consumed, so that the nano silver market will develop strongly, and the market will grow to about 900 million dollars by 2014. The plastic substrate will occupy the leading position in the substrate market, and it is estimated that by 2014, it will create an operating income of 7.7 billion dollars. In the production of soft electronic products and roll to roll process, the applicability and price advantages of plastic substrate are incomparable. Although several plastic substrates with excellent curing properties have been used by manufacturers, including PET and other products, PEN has a very good market prospect due to its good dimensional stability and thermal stability. (Editor：admin)