Under normal working conditions, the system allows for a double filtration area to enable higher work efficiency;
在正常的工作状态下，系统中具有双倍的过滤面积，提高工作效率；
It has a security system that can operate automatically, and beyond the normal working conditions when they stop immediately.
它有一套安全系统，它可以自动运转，并在超出正常工作条件时立即停止。
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