pg. 4
"In addition to the Code of Conduct for Employees, Nordex established a special Code of Conduct for Contractors and Suppliers in which we expect them to adhere to the principles of integrity and ethical, lawful conduct throughout the entire duration of their business relationship with us. Our Code of Conduct for Contractors and Suppliers explains our labour and human rights requirements and explicitly requires full compliance with them.
Our suppliers and contractors are required to commit to it in writing. In agreeing to it, suppliers and contractors commit to prohibit and refrain from using any kind of child labour, as well as not to use compulsory, forced or prison labour.
The Code of Conduct for Contractors and Suppliers also requires that suppliers and contractors ensure compliance with these principles in their own supply chains."
These also apply beyond tier 1 based on the last sentence quoted