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Optima Specialty Steel, Inc., headquartered in Miami, FL, is one of North Americaâs leading independent manufacturers of specialty steel products.
There are not that many mechanical watch movement producers in Japan, The big three watch brands there are Casio, Citizen, and Seiko - and Casio is strictly quartz. Citizen owns the movement maker Miyota, which makes movements for mechanical Citizen watches but also sells movements to third party brands.