At Sifubuy, we understand the importance of quality control (QC) in ensuring the performance and longevity of luxury timepieces, such as the Rolex GMT-Master II series. Our commitment to excellence is reflected in our meticulous QC process, which is meticulously documented and supervised using the Sifubuy spreadsheet.The Sifubuy spreadsheet serves as a comprehensive tool for overseeing the quality inspection of the Rolex GMT-Master II series watches. It is designed to record and monitor various critical aspects of the watch's movement performance, ensuring that each timepiece meets the highest standards of precision and reliability.Within the spreadsheet, we meticulously document the following:1. Movement Accuracy Testing:2. Power Reserve Assessment:3. Movement Component Inspection:4. QC Personnel Qualifications and Equipment:Customers who purchase a Rolex GMT-Master II series watch through the Sifubuy platform can review the spreadsheet to oversee the quality control of the watch's movement. This level of transparency and access to detailed QC information ensures that our customers can trust in the performance and reliability of their Rolex timepiece.For more information on our QC process and to view the Sifubuy spreadsheet, please visit Sifubuy's official website. Here, you can gain a deeper understanding of our commitment to quality and the measures we take to ensure that each Rolex GMT-Master II watch we sell meets the highest standards of excellence.