Polyetherimide is a suitable plastic material for forming the substrate plate. A suitable molding process is injection molding, wherein a highly polished mold is used.
聚醚酰亚胺是适于作所述基片的塑性材料，合适的模塑过程是注塑模，且使用高度抛光的模具。
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Polyether-imide (PEI)is a new amorphous thermoplastic polyimide. It has good processing behavior with typical thermoplastic processing and forming equipment to manufacture a lot of products.