3M factory inspection 中的M代表什么? During the 3M factory inspection for filters: •F-001 •F-002 •F-003 It was noted that the external heat tracing was tack welded to the vessel which raises two issues: 在对以下 过滤器 进 行 3M 工厂检验 期间: ---------------As required by susan,I add more context for your information. [ ]查看更多13个回答 . 4人已关注