can't read?
Copper is a chemical element with symbol Cu It is a soft, malleable and ductile metal with very high thermal and electrical conductivity
C 0312 (OTTO) Copper powder, -625 mesh, APS 3.25-4.75 µm, 99.9% Cas 7440-50-8 - used in aircrafts, space crafts, parts for guns, porous metal.