We have developed the DMP 3D printing system ourselves, and DMP stands for Dual Material Printing or Duplication & Mirror Printing. It can move 7-axis at the same time and has the firmware collision avoidance function of running two nozzles efficiently. Our self-developed TENLOG® Multi Nozzle 3D Printer Motherboard has a 7-axis motion control system. The Tenlog motherboard can work for 500 hours without interruption. The motherboard firmware is based on marlin 1.0.x and is open source. You can buy it to make a spare part for Tenlog Dual Extruder 3D Printer.