The buyer shall pay for the goods in full, without offset or deduction, within the time frame and in the manner set forth on the invoice. For those sales that do not require payment in advance of or upon delivery, if payment is not received to us within the period set forth on the invoice, Buyer shall pay to us, on-demand, a late payment charge of 1.5% per month of the unpaid balance or the maximum rate of interest allowed by law, whichever is less. Time is of the essence with respect to the Buyer’s obligation to pay all invoices in full in a timely manner. All checks are subject to collection. We may offset against any payment hereunder any amount owed to us by Buyer, whether under this or any other contract between Buyer and us. Acceptance of any partial payment shall not constitute a waiver of our right to payment in full of all amounts owing from Buyer to Seller. Buyer hereby grants to us a security interest in the goods shipped pursuant to this Contract, including all accessions to and replacements of the goods and the proceeds thereof, to secure the due and punctual payment of the purchase price of goods and other amounts owing hereunder. Buyer shall execute and deliver to us any additional documents, instruments, financing statements, or amendments that deems necessary or advisable to maintain, continue, and perfect the security interest created.