Phosphrus | Nitrogen | Sulfur | Halogenic | Boron | Ceremics | ||
Reagent Flame- retardant | P1 | ● | |||||
P2 | ● | ||||||
NS | ● | ● | |||||
PNH | ● | ● | ● | ||||
PN | ● | ● | |||||
Commercial Flame- retardant | C | ● | |||||
GB | ● | ||||||
PNS | ● | ● | ● |