Closed system, negative pressure operation, no dust emissions, a good operating environment.

系统全封闭，微负压操作，无粉尘飞扬，操作环境好。

youdao

Closed system, negative pressure operation, no dust emissions, a good operating environment.

系统全封闭，微负压操作，无粉尘飞扬，操作环境好。

youdao