Tuflex warrants new equipment of its own manufacture for 12 months against defective workmanship and materials under normal use and service, but not against damage of any kind resulting from erosive or corrosive liquids handled by the equipment or from improper installation or maintenance, or from misuse, negligence, alteration or accidents. Equipment covered by this agreement which is not manufactured by Tuflex shall be covered only by the warranty, if any, of its manufacturer. Charges for pick-up and delivery are not covered by this warranty. Tuflex’s obligation and the purchaser’s sole remedy under this warranty is limited to the repair or replacement, at Tuflex’s option, of any part found to be defective in material or workmanship without charge for parts or labor. Any tanks or parts purchased before the move of Tuflex to Douglasville, GA, are not covered under warranty.