Codelco, the National Copper Corporation of Chile, is the world leader in copper production and is an autonomous company owned by the Chilean State, they visited Weidouli and had a Supplier Technical Assessment audit this April, for their Chile SUMINISTRO DE VÁLVULAS PROYECTO PONDS titanium valves projects. The audit result is SATISFACTORY, and Weidouli receives the RT project titanium valves purchase order from Codelco.