| After-sales Service: | Quick and effective after sales service |
|---|---|
| Warranty: | Quick and effective after sales service |
| Ring: | Height is 6.4mm; upper aperture is 19.8mm; lower a |
| Ball: | Diameter is 9.5mm; weight is (3.50±0.05)g |
| Test method: | 2 samples, parallel test |
| Vessel: | 1000ml beaker |
| Customization: |
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