标题: BS EN ISO 14644-9:2012 Cleanrooms and associated controlled environments [打印本页] 作者: hgundas 时间: 2020-4-5 21:36:43 标题: BS EN ISO 14644-9:2012 Cleanrooms and associated controlled environments
[attach]222974[/attach] BS EN ISO 14644-9:2012
Cleanrooms and associated controlled environments
Part 9: Classification of surface cleanliness by particle concentration (ISO 14644-9:2012)