Let's compare the three versions of LumenPNP, and you will find that removing the X-axis and Y-axis tank chains of PNP is not the correct choice. Welcome back to the classic PNP structure with LumenPNP. You don't have to worry about cables flying in the air quickly getting damaged anymore. PNP is not a 3D printer, it requires high-speed and wide range movement, therefore its cable and air tube must be protected by tank chains.