[태그:] contract

Refer to our post on Copper Element for added data and facts about this metallic substance. Copper is a soft, malleable, and ductile metal with quite high thermal and electrical conductivity. A freshly exposed surface of pure copper has a reddish-orange colour. Ultimately, in the German trial at the Asklepios Hospital, Hamburg, touch surfaces in patient bed rooms, rest rooms, and staff rooms in an oncological/pneumological and a geriatric ward…Read More