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Grenchen Grenchen is hosting four of the largest companies in Switzerland (Schweiz). According to the NACE-activities of the biggest companies, Grenchen is the city of the NACE-Code: "33: Manufacture of medical, precision and optical instruments, watches and clocks"
City:	Grenchen (See Map below)
Country:	Switzerland (Schweiz)
Largest companies:	Breitling AG ETA SA SMH Automation Division Der ETA SA Décolletage AG
City Id:	9102

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