It is also expected that halogen materials will no longer be used, partly because polymer additives such as plasticizers, stabilizers and halogen flame retardants are facing increasing social pressure. Prior to this, halogen flame retardant was a general flame retardant for thermoplastic polymers and was often used in combination with antimony trioxide. Hesselbart of Ems-Griltech believes that halogen-containing products will produce high concentration of toxic and corrosive gases when burning, which makes the recovery of final products complicated. Finally, she said that the flame retardant polyester material of Ems-Griltech can improve the fire resistance, and it is no longer necessary to use halogen-containing and heavy metal-containing flame retardants.