If you want to learn even more PCGamesN has a writeup over here.
Production of the product is done at the factory of PC Partner which is the parent company of ZOTAC, the location is Dongguan, Guangdong province, China. It is done consistently here from test manufacturing to packaging. The parts mounting on the board is almost fully automated, and users wanting to worry about how the latest video cards are being manufactured should check them out.... Also, test production of prototype, performance test of cooler, test of noise, various durability tests etc. are done here, impression that quality control is also thoroughly done.
Via: HardOCP