This standard specifies the terms and definitions, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage and quality commitment of halogen-free flame retardant PBT resin. This standard applies to polybutylene terephthalate (PBT) resin as the base material, added with halogen-free flame retardants, lubricants, antioxidants and other additives during production, and produced through blending, extrusion and granulation. .