Zyxel has qualified and been certified for some quality related management systems: ISO 9001, TL 9000, and ISO 14001. To respond continuously in its role as a green company, Zyxel endeavors to reduce raw material consumption, use higher pollution protection mechanisms, and maintain Plan-Do-Check-Active (PDCA) procedures to achieve higher efficiency risk management. Zyxel takes voluntary green awards and marks into account to enhance and improve internal environmental rules and requirements while establishing a valued green supply chain and strengthening the connections between suppliers to achieve sustainable development with all suppliers and customers.