2019GB/T 3883.311-2019 Safety of motor-operated hand-held, transportable and garden tools—Part 311: Particular requirements for transportable cut-off machines
2000GB/T 13960.11-2000 Safety of transportable motor-operated electric tools--Part 2:Particular requirements for cutting-off grinders
GB/T 13960.11-2000 Safety of transportable motor-operated electric tools--Part 2:Particular requirements for cutting-off grinders was changed to GB/T 3883.311-2019 Safety of motor-operated hand-held, transportable and garden tools—Part 311: Particular requirements for transportable cut-off machines.