The Purchaser acknowledges and confirms that the Order is irrevocable and cannot be cancelled by the Purchaser, and that the Product(s) ordered are neither returnable nor refundable. All sums paid by the Purchaser to Bitmain shall not be subject to any abatement, set-off, claim, counterclaim, adjustment, reduction, or defense for any reason. Down payment and payment of Total Purchase Price are not refundable, save as otherwise mutually agreed by the Parties.