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GB/T 19001—2016、GB/T 24001—2016

Flame Retardant Grade

F-Series/Flame Retardant——Fire retardant & high-expansion

Normal Grade

E-Series/Standard Grade——Easily processed & wide adaptable.

B-Series/Fast Cycle——Fast molding & Most economic

H-Series/Low Density——Extremely widespread applied and Highest expansion

Highly Flame Retardant Grade

FM-Series/Flame Retardant——High fire-retardant & Standard expansion