How is tectum made?

I'm curious to understand the intricacies behind the creation of tectum. Could you elaborate on the process? Specifically, what materials are used in its fabrication? Is there a specific technology or methodology that's employed to ensure its durability and resilience? Additionally, are there any unique steps or considerations taken during the manufacturing process that contribute to the overall quality and uniqueness of tectum? I'm eager to gain a deeper understanding of this fascinating material and its manufacturing process.