Does plastic toner (colorant masterbatch) affect people's health?

Carbon powder is synthesized by some chemical additives, most of which contain heavy metals, which are particularly harmful to health. Be careful when working in places containing toner for a long time, and be sure to wear protective equipment, such as masks, glasses, dust-proof clothes, etc. And you must go to the quarantine center for physical examination every six months. But also has an impact on fertility. Young people without children are advised not to engage in such work! ! !