Rolex himself alchemy. Rolex purchases steel from a handful of suppliers (replica watches uses these steels as raw materials for processing and making parts). All gold and platinum are produced in their own alchemy. 24K pure gold into rolex replica watches, made into 18K gold, platinum, rolex replica's eternal rose gold (unique non-faded 18K rose gold). High temperature furnace melting, mixing alloy, and then need to be made into a case and strap. Because Rolex control and production of precious metals, so not only can strictly control and ensure quality, but also to ensure the appearance of beautiful. As far as I know, Rolex is the only watchmaking company with an alchemy.