I work in the watch for many years, learned a lot from the things I hope to bring professional knowledge of watches and clocks! I hope we can learn more from the school! A composition of the watch, movement (domestic or imported) B, the table Shell (including the table Meng, bottom cover) C, strap (metal or leather) D, dial (copper, aluminum, paper) E, back cover (stainless steel) F, Shell: At present, the use of the domestic market case alloy shell, copper shell, steel, tungsten steel shell. 1, alloy shell: Generally speaking, the processing technology is simple, the production cycle is short, the output is large, the price is low, and the development is relatively rapid in recent years