The supplier will sent to DEMCO and consignee timely as per ANNEX 3 the required copies of drawing,shop test results, instruction manual, and drawing for installation,etc. forwarding to Customer for approval/reference. The drawing for approval will be returned to the supplier within Forty-five (45) days after submittal by the supplier, all drawing and instruction manual shall strictly conform to conditions laid sown in the ANNEX3. DEMCO and consignee shall inform the supplier within one week after receiving customer's comments.