A concrete tanker truck passed by on the road, and its body was not uncommon.
What really made people unable to resist taking a second look was the large tank behind it that kept spinning.
When waiting for the red light, it turns; when turning, it turns; when approaching the construction site, it still turns.
Many people subconsciously feel that this is “making the concrete harder” or simply because the equipment design is like this, unable to stop.
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