发布时间:2025-02-08 12:09:44
你是想问磁性白板墙贴对人体有害吗?
磁性白板墙贴不会对人体有害!
磁性白板墙贴本身没有磁性,惹事配套的磁扣和永磁体,
而磁扣的磁场强度相比电脑、手机等电磁辐射来说,对人体的影响已经是微乎其微了。
砌体工程施工质量验收规范规定施工时所用的小砌块的产品龄期不应小于
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