Based on this product's specifications, here are some alternatives and similar models
Build Plate — Elegoo Double-sided PEI Plate for Neptune 4 / Pro (print surface replacement)
Summary description:
Double-sided PEI build plate designed for Elegoo Neptune 4 and Neptune 4 Pro 3D printers. Provides a PEI-coated printing surface on both sides for reliable first-layer adhesion and easy part removal. Intended as a direct replacement for the original build plate to restore or improve bed adhesion for PLA and common filaments during desktop FDM printing.