 Thermosetting ቁሳዊ, ከፍተኛ ነበልባል retardant ክፍል, ብሔራዊ GB8264 መስፈርት ያለውን B1 ደረጃ ለመድረስ;
1. impahla Thermosetting, nelangatye eliphezulu nekudodobalisa kwibakala, ukufikelela kwinqanaba B1 asemgangathweni kazwelonke GB8264;