the seller,shall always expedite delivery of the goods,the seller's documents and any related work of sub-vendors,and provide the buyer with an itemized schedule for engineering,procurement,fabrication and shipping,which shall be followed by expediting reports including status of deliveries of materials and/or equipment purchased from sub-vendors,if any,each month after acceptance of the purchase order if,however the seller encounters delay in its own manufacturing works,the seller shall immediately inform the buyer of such situation