1.Flame retardant masterbatch &ABS flame retardant masterbatch&FR masterbatch&FR MB &ABS FR MB&functional masterbatch 2.V0,V1,V 1.Flame retardant masterbatch &ABS flame retardant masterbatch&FR masterbatch&FR MB &ABS FR MB&functional masterbatch2.V0,V1,V23.1:3 usage dose4,Mix the FR masterbatch with the ABS directly ,then you can do injection directly.