Is the company that makes integrated circuit boards toxic or radioactive?

... arc radiation, high frequency magnetic field and tungsten radioactive radiation of high temperature metal cigarette holder ... Coarse grinding machines (including cutting and gluing) are toxic and harmful ... 88 Printing photography, rotten plates and printed circuit plate making are toxic and harmful to potassium hydride, silver sulfate, ammonium dichromate, lead potassium sulfate, ferric chloride and hydrochloric acid. ...