On the header of PO, the name and address have be there. You can use that to issue invoice.
What’s more, could you help us to find the “Microcell Antenna 824-960/1710-2170 MHz 12dB” and “V-Pol Panel Antenna 12.2 dBi 824-960/1710-2170 MHz” follow the AIS’s vendor list.
Big thanks!