1) Product Modification by SUPPLIERSUPPLIER shall inform BUYER Quality department of this modification within a reasonable time, two (2) months before the date on which SUPPLIER wishes to implement it.For manufacturing changes, SUPPLIER Quality Department will use MCR (Manufacturing Change Request).The Product Quality Control Plan shall be updated if needed.For Product changes, SUPPLIER Quality Department will use PCR (Product Change Request).SUPPLIER shall verify the BUYER MCR or PCR acknowledgment. BUYER shall send the MCR or PCR acknowledgment within ten (10) working days.When BUYER requests it, SUPPLIER shall send a Product prototype within reasonable time.BUYER studies the MCR or PCR according to BUYER process.BUYER will start the verification and qualification process on the changed new parts or new supplier when approved the change request.