GD-245 adapt or heating in the melting point closer to its melting temperature, the maximum processing temperature of not more than285℃ engineering plastics ,such as PBT、HIPS、ABS、PC/ABS etc，when you use,you'd better use SB2O3,In PBT,the additive usage is :12%.HIPS 14%,ABS:14%.PC/ABS 7%,the SB2O3  is usual 1/3 of the additives.(the additive usage is only for suggestion. Like in ABS,the additive usage 15%.then you should add 5%SB2O3， In PBT/PET11% add 4% SB2O3，In HIPS12% add 4% SB2O3，In PC/ABS9~13% add 3~4% could reach UL94-VO。 At the moment ,Kingfa is  wildely using in ABS.what's more the quantity is increasing greatly..