Polyetherimide (PEI) is an amorphous, amber-colored specialty engineering plastic. Wanrun is the first company to achieve commercial production of PEI resin in China. At present, Wanrun PEI series products have achieved kiloton mass production, product models are: PEI-VAT002 (matrix resin), PEI-VAT002BK/BL/GN (color matching), PEI-VAT002G10/G20/G30 (glass fiber reinforced), PEI-VAT002HF (high MI), PEI-VAT002P350/200/100/50 (powder) and a series of bases Base resin, high fluidity resin, color changing resin and glass fiber doped resin.