The document discusses confidential information regarding a Wanhao D6 PTFE nozzle pipe that uses a half graphite insert as a substitute. It highlights concerns about unauthorized copying and includes proprietary information from Keytech S.R.L. dated 20/11/16.

1. Confidential documents, unauthorized copyingCopyright Keytech S.r.l. 20/11/16
Wanhao D6 ptfe Nozzle pipe substitute with half graphite insert
Extruder
Standard Ptfe
Graphite Insert

2. Confidential documents, unauthorized copyingCopyright Keytech S.r.l. 20/11/16
Wanhao D6 ptfe Nozzle pipe substitute with half graphite insert
Graphite Insert