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بایگانی برچسب ها 'PPGI PPGL steel coil'

The entire process of manufacturing

The crystal is attached to the Oyster assembly with a zytel washer and then the bezel is fitted to complete the hermetic seal.The seal of the crystal is so designed that the excessive pressure that builds up when submerged at depth, actually increases the effectiveness of the seal. Finally, the auto-winding Rotor mechanism is installed […]

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