_[Reverse side language] - Pratum PAYMENT All invoices provided by Seller to Buyer shall be paid within 30 days of the invoice date with the exception of HBSFLEX Agreement invoices HBSFLEX Agreement invoices shall be paid upon receipt of the invoice In the event that Buyer is delinquent on paying any amount, Seller reserves the right to charge interest on the unpaid amount at the rate of 1 5% per month A service charge of