DIN EN 60335-2-91-2004 家用和类似用途电器的安全.第2-91部分:手扶和手持式草坪修整机和草坪修边机的特殊要求
Household and similar electrical appliances - Safety - Part 2-91: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers (IEC 60335-2-91:2002, modified); German version EN 60335-2-91:2003