The ZHENJIANG Modern Printing　Machi ne Factory is the largest professional manu facturer of envelope machinery in the count ry. The auto envelope machine series prod u cts can produce the common envelope,in ternational envelope, window envelope,C D paper bag and pasting envelope, etc. in the national standard. They are the major equipments of producing standard envelo pe that the Ministry of Post and Telecomm unication generalizes as an emphasis.Esp ecially the successful development of the PTF series fully automatic integrated machine has settled the leading posit ion of our company in the domestic envelope machinery industry. The machi ne has the function of opening window, pasting film, pasting glue, auto fold ing, drying, pasting sticky glue and auto pasting paper. The company is now one of the few companies that can produce fully automatic interlock envelop e machine in the world after the W+D corporation of Germany, the F.L.SMIT H of the USA and other corporations. The technology of the company hasfill ed up the vacancy of the country in the envelope machine, and many of the technology are in the leading place in the country. The envelope machine of us has become the first choice for the large envelope factories to replace th e imported equipments.