DIN EN 60745-2-21-2011 手持式电动工具.安全性.第2-21部分:管道疏通机的特殊要求(IEC 60745-2-21-2002,修改件+A1-2008).德文版 EN 60745-2-21-2009+A1-2010
Hand-held motor-operated electric tools - Safety - Part 2-21: Particular requirements for drain cleaners (IEC 60745-2-21:2002, modified + A1:2008); German version EN 60745-2-21:2009 + A1:2010