KS C IEC 60335-2-91-2013(2018) Household and similar electrical appliances ― Safety ― Part 2-91: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge
2013KS C IEC 60335-2-91:2013 Household and similar electrical appliances ― Safety ― Part 2-91: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge
2005KS C IEC 60335-2-91:2005 Household and similar electrical appliances-Safety-Part 2-91:Particular requirements for walk-behind andhand-held lawn trimmers and lawn edge trimmers