Dongguan Hongtao Plastic Hardware Co., LTD
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(Total 1 Products for One Way Breathing Valve Price)
One Way Breathing Valve Wholesale
One Way Breathing Valve Wholesale The positive pressure of the exhaust gas during exhalation blows the valve plate open to quickly remove the exhaust gas from the body and reduce the sultry feeling when using the mask, while the negative pressure during inhalation will automatically close the valve to avoid inhaling...
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