Looking for black galaxy granite Ethiopia

Our company wants to buy black galaxy granite in bulk quantity by the following sizes.
1.125x34x3cm
2.150x34x3cm
3.160x34x3cm
4.220x63x2cm
5.125x15x2cm
6.150x15x2cm
7.160x15x2cm

Let me have formal proforma for these sizes by galaxy granite.