Pentaerythritol, dipentaerythritol, tripentaerythritol (PE, DPE, TPE) is a fine chemical intermediates, which have a wide range of applications in many fields. Especially the dipentaerythritol in senior aviation lubricants, photosensitive coating which has incomparable superiority. The world dipentaeythritol manufacturers is rare, low output. But the domestic and foreign market has a big demands. Research and development of pentaerythritol, di-pentaerythritol not only meet the domestic and foreign markets, but also to create greater economic benefits. Few dipentaerythritol and tripentaerythritol manufacturers in the world . the price of pentaerythritol , dipentaerythritol, tripentaerythritol maintained in a 1:4.5:3.5 in many years.