Impurity(%)

Ag

Au

Pd

Rh

Ir

Fe

<0.0005

<0.001

<0.001

<0.001

<0.001

<0.001

Al

Pb

Ni

Cu

Si

Sn

<0.001

<0.001

<0.001

<0.0005

<0.001

<0.001

Mn

Mg

Cr

Bi

Zn

Ru

<0.001

0.001

<0.001

<0.001

<0.001

<0.001

Conclusion

Conform to enterprise standard