This external vibrator is equipped with a powerful motor that generates high-frequency vibrations. The ZW-2.5 operates at a frequency of up to 12,000 vibrations per minute, allowing it to effectively penetrate the concrete and eliminate trapped air bubbles. The result is a denser, stronger concrete structure with fewer chances of cracking or deterioration over time.
https://www.cnguangling.com/pr....oduct/high-frequency
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