Precision Hairspring
Precision Hairspring, Total:2 items.
The international standard classification for "Precision Hairspring" includes: Watches .
The Chinese standard classification for "Precision Hairspring" includes: Horology .
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 4032-1983 Wrist-chronometer with spring balance oscillator
- GB/T 4032-2013 Wrist-chronometers with Spring Balance Oscillator
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