Nanjing Lianzhong Engineering Technology Co., LTD is a manufacturing enterprise, national high-tech enterprise, located in Nanjing Lishui Development Zone, founded in 1999, has been authorized 27 invention patents, more than 200 effective utility model patents, 25 international PCT patents, core patents have been authorized by the European Union, the United States, Japan, Australia and other countries. Led the editing of four national group standards.