We strictly follow international standards:

• Source control: The cooperative steel mills are well-known domestic and foreign companies such as Baosteel, TISCO, and Posco;

• Dual certification: Passed ISO 9001 quality management system certification, and provided material certification (MTC) and third-party test reports;

• Professional quality inspection: Each batch of goods is inspected by the internal quality inspection team, and supports re-inspection by customer-designated institutions.