In some plants that make nanometric powders under contract for larger companies, or in mixed processing plants, the air is full of dust from powders that contain ingredients such as metals that may accumulate in the body, yet workers walk about obliviously without special breathing masks or other protective equipment.
一些為大廠代工作奈米粉體或混合加工的小廠內，煙塵瀰漫，配方中含有金屬成分的奈米微粒若吸入人體，即可能殘留不去，然而沒有戴特殊口罩或任何防護設備的工人，卻毫不以為意地在廠區行走工作，實在令人捏把冷汗。