GUANQIN women watch Fashion temperament 31mm Diamond Mother-of-pearl dial Luxury Watches Automatic timing Quartz movement Ultra-thin waterproof Five colors, Don't buy;won't ship

Guanqin brand watches were founded in 1989. The stainless steel strip used for watches is the stainless steel flat steel used for watches, which can be divided into two types: hot-rolled and cold-rolled. In the production process, the sulfur content of certain brands and the addition of free-cutting elements such as copper and calcium can increase the cutting speed. In addition, it needs to be solid solution treated to have a single austenite structure, and the manufacture of the watch case can have anti-magnetic characteristics.