Piezoelectric Quartz Crystal for Watches
High-precision synthetic quartz crystals engineered for use in quartz watch movements, exhibiting piezo-electric properties when subjected to mechanical stress. Classified under HTS 7104.10.00.00 as piezo-electric quartz, a synthetic precious or semiprecious stone, worked but not mounted or set. These crystals generate stable frequencies essential for timekeeping accuracy.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| šØš³China | 3% | +17.5% | 20.5% |
| š²š½Mexico | 3% | +10.0% | 13% |
| šØš¦Canada | 3% | +10.0% | 13% |
| š©šŖGermany | 3% | +10.0% | 13% |
| šÆšµJapan | 3% | +10.0% | 13% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied as finished semiconductor device or module
Finished quartz crystal oscillators with electrodes and housing are classified as semiconductor devices in Chapter 85, not raw piezo-electric quartz.
If unworked or simply sawn/cut natural quartz
Natural, non-synthetic quartz without piezo-electric processing falls under worked precious stones in heading 7103.
If imported as complete clock movement component
Quartz crystals pre-mounted in watch movements are classified with the complete mechanism under heading 8481.
Not sure which classification is right?
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Import Tips & Compliance
ā¢ Verify piezo-electric certification and frequency specifications to confirm classification as synthetic quartz under Chapter 71
ā¢ Provide lab test reports proving synthetic origin and piezo-electric properties to avoid reclassification as natural stones
ā¢ Declare exact dimensions and grades; temporarily strung for transport is allowed but must not mimic mounting
Related Products under HTS 7104.10.00.00
AT-Cut Piezoelectric Quartz Blank
Synthetic AT-cut quartz blanks precision-cut for oscillator applications, featuring optimal temperature stability due to piezo-electric characteristics. Falls under HTS 7104.10.00.00 as worked synthetic piezo-electric quartz, not strung, mounted, or set. Used primarily in electronics for frequency control.
Synthetic Piezoelectric Quartz Resonator Wafer
Thin synthetic quartz wafers cut for high-frequency resonators, leveraging piezo-electric effect for signal generation in communication devices. HTS 7104.10.00.00 applies to these unmounted, graded synthetic stones. Essential for RF filters and mobile phone timing circuits.
Frequency Control Piezo-Quartz Bar
Synthetic quartz bars engineered for precision frequency control in telecommunications equipment, utilizing inverse piezo-electric effect. Classified HTS 7104.10.00.00 as worked piezo-electric quartz, temporarily strung only for transport convenience. Provides stable oscillation for base stations.
High-Purity Piezoelectric Quartz Plate
Ultra-pure synthetic quartz plates for medical ultrasound transducers, converting electrical energy to mechanical via piezo-electric properties. HTS 7104.10.00.00 covers these graded, unmounted synthetic semiprecious stones. Critical for non-invasive imaging equipment.
SC-Cut Synthetic Piezo Quartz Crystal
Stress-compensated (SC-cut) synthetic quartz crystals for aerospace GPS receivers, offering superior frequency stability through piezo-electric optimization. Under HTS 7104.10.00.00 as unmounted piezo-electric quartz. Meets stringent vibration and temperature specs.
Piezoelectric Quartz Sensor Element
Synthetic quartz elements for pressure and vibration sensors in automotive applications, generating electrical signals via piezo-electric effect. HTS 7104.10.00.00 for unmounted, worked synthetic piezo-quartz. Used in engine management systems.