I’m writing this to you “Regarding the chemicals and other goods we have purchased from you. Initially, we have informed all our suppliers before to always fill their PO number into each invoice when deliver goods/chemical to our factory. If we found no PO number on their invoice upon delivery, we reserve the right, at our sole discretion, to not accept the goods/chemical. These general terms and conditions shall apply to all our suppliers, contracts of sale, assignments and to the deliveries and the acceptance of work resulting from them. Any applicability of general terms and conditions used by the other party is hereby excluded explicitly. The above shall apply without prejudice to the other rights to which we are entitled. Thank you for your nice cooperation.