1、Special Design: Build platform adopts a double sided PEI spring steel bottom plate design. Compared to a smooth PEI, the matte texture makes it easier for the substrate to adhere to the PEI surface. Adopt double sided spray coated PEI spring steel plate, with strong adhesion and better adhesion to the model. You can use either side. 2、Strong Performance: Round build platform is flexible, removable, high strength, and heat resistant, with a double sided design, making it thicker and more durable. The platform can easily handle temperatures up to 130 °C. Ideal for PLA, PETG, PEEK, and ABS. 3、Excellent Material: Printing platform is made of spring steel with inherent flame retardancy and low smoke, high strength and heat resistance. 4、Repeated Use: This build platform adopts 220mm / 8.66in diameter PEI board. Reusable multiple times, just wipe with isopropyl alcohol between printing for optimal results. 5、Perfect Flatness: The PEI sheet has strong adhesion, no scratches, and can be easily removed from the platform by bending. Provide the smoothest construction surface on the current market, ensure a high flatness of the printing bottom, and ensure that the model can firmly adhere to the surface of the printing platform.