Hi we're developing a 6 layer pcb , but in the link https://www.pcbway.com/multi-layer-laminated-structure.html there's no specification about the thickness and everything related to use the stackup in altium. please someone have me more details about the default and most used stackup for 6 layers ? do you have a stackup file for altium ? the thickness total of the stack up is 1.6mm. Thank you.