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The material for both masks, DAC4 no
valve & DAC4-F with valve is the same - no woven cloth.
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DAC4-F: A valve has been added for easier
exhaling.
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Surface layer: 40 gram P.P. no woven
cloth.
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Active carbon layer: active carbon particles
distribute uniformly on 50 gram P.P.
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No woven cloth by hi-tech electrostatic
absorption.
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Filter layer: 55 gram P.P. ultramicro
fiber. For 2 - 4 micrometer particles, the rate for filtering is up 99%.
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Inner layer: low melting polyester fibre,
imported from Japan.
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The particles of agriculture
chemicals and fertilizer is up to 2 - 4 micrometer, so the rate for filtering
is up to 99.99%.
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All these two kinds of masks are suitable
for the farmer to protect from spraying agriculture chemicals and fertilizer.
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The function of active carbon is deodorization
and degassing.
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The different from DAC4 & DAC4-F
is that DAC4-F is more suitable for hard work, because it is easier to
inhale and exhale.
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One 40' container can load 500,000 pcs
DAC4 masks.
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One 40' container can load 250,000 pcs
DAC4-F masks.
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