- WTZ - General Terms and Conditions of Purchase (July 2025) (English)
- WTZ General Terms and Conditions of Purchase (June 2025) (Portuguese-Brazilian)
- WTZ General Terms and Conditions of Purchase (June 2025) (French)
- WTZ General Terms and Conditions of Purchase (June 2025) (Hungarian)
- WTZ General Terms and Conditions of Purchase (June 2025) (Italian)
- WTZ General Terms and Conditions of Purchase (June 2025) (Spanish)