Suppliers must sign a letter of commitment to comply with the sustainability requirements through which it is verified that the companies which are going to work with Geoalcali have a code of ethics and conduct (or undertake to adhere to Group’s Code) and that they do not have a history of negative social or environmental impact or a record of discrimination (due to gender, race, etc.), harassment, abuse or mistreatment of its workers, suppliers or the local communities in which it has operated; and 2.