Arsenic is a common distribution in rats caused by passenger natural corrosion of crust and is usually in the form of compounds of a nai or sulfide. Be creative in the industry.
Arsenic is an element that is distributed in nature. By arsenic was from the weathering of the earth's crust and is usually in the form of arsenate compounds cyanides or sulfides. Was introduced in the industry.
Arsenic is an element with general distribution in nature. The cabin I caused by the corrosion of the crust and are often in the form of arsenide or sulfide compounds. Right to use in the industry.