南京睿督分享常见车辆材料的EN45545检测标准和项目 EN 45545-2 R1/R7测试项目及标准-动车车体大面积使用材料 EN ISO 5658 for Spread of flame / 火焰蔓延测试 EN ISO 5660-1 for Heat Release / 热量释放测试 EN ISO 5659-2 for smoke density / 烟雾密度测试 EN 17084 for ...
The problem: much of this cooking happens inside and the smoke it produces is laced with toxic particles. This type of household air pollution led to 3.1 million premature deathsin 2021 and is part of ...