UL 2157 CRD-2011 电动洗衣机和甩干机的UL安全标准. 节/段落参考: 补充件SA主题: 臭氧生成洗衣机 (第二版: 1997年6月1日)
UL Standard for Safety Electric Clothes Washing Machines and Extractors - Section/Paragraph Reference: Supplement SA Subject: Ozone Generating Washing Machines (Edition 2: June 01, 1997)