Our company grew out of Wenzhou Longwan East-China Machinery, established in 1997, dealing with compressor components. In 2002 it is renamed Wenzhou Kaiwei Machinery, producing envelope making machines. In 2008, Nanjing ZONO established, situated at No.63 Gutan Road, Gaochun Development ZONO, Nanjing City, specializing in designing and producing paper bag making machines.