First of all, players need to complete the main mission "Civil War". After completing the task, players need to increase the reputation of the Necromancer Spirit Group before they can purchase the production blueprint. Currently, the only way to obtain it is to exchange the reputation of the Necromancer Spirit for blueprint manufacturing. The manufacturing cycle is the same as that of the battle armor. Parts 12 hours total drawing 72 hours. This requires players to reach at least mastery level 14 before they can purchase the pursuer blueprint required to upgrade the Necronomicon Spirit Group.
The above is the entire content of the Star Warframe Necromech guide, I hope it can help everyone.