2012GB 3883.9-2012 Safety of hand-held motor-operated electric tools.Part 2:Particular requirements for tappers
2005GB 3883.9-2005 Safety of hand-held motor-operated electric tools-Part 2:Particular requirements for tappers
1991GB 3883.9-1991 Safety of hand-held motor-operated electric tools--Part 9: Particular requirements for electric tappers
GB/T 3883.9-2012 Safety of hand-held motor-operated electric tools - Part 2: Particular requirements for tappers was changed to GB/T 3883.209-2021 Safety of motor-operated hand-held, transportable and garden tools—Part 209: Particular requirements for hand-held tappers and threaders.