800,000 per Day Mask Factory // (含中文字幕) // 此工厂日产80万片口罩

In this video we take you on a tour of a KN95 mask factory and show you how these are made from start to finish, we also do some quality testing on them.

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Видео 800,000 per Day Mask Factory // (含中文字幕) // 此工厂日产80万片口罩 канала Barrett