When discussing a annotated agreement letter ( contract) between a cosmetic product that is being produced by a manufacturer company to an owner How and when the buyer pays for the product. Payment must be made after the product is delivered to the buyer? What happens in the event buyer fails to pay for the cosmetic product? What are the liquidated-damages provision that addresses what happens if the seller breaches the contract of the cosmetic product ? What contract must address parol evidence? What must address how the parties can modify the contract? REFERENCES: https://corporate.findlaw.com/contracts/planning/purchase-agreement-revlon-inc-and-beauty-care-professional.html