A face mask comprising a head covering, a sealing means for isolating the head covering from the atmosphere when the head covering is worn, an air outlet and inlet section connected to the head covering and wiper means provided at the head covering. The air outlet and inlet section comprises...
Ski Mask Men Women Full Face Mask for Cold Weather Skiing Snowboarding Motorcycle Riding Mens Sports Mask Selling Units: Single item Single package size: 25X15X5 cm Single gross weight: 0.750 kg Show more Lead time Samples Maximum order quantity: 1 pair Sample price: $1.95/pairOrder sample...
cold_weather_mask 军用背包厂家 军用背包生产厂家 极寒保暖面罩(草绿色) 09/19/20 Saturdayadmin1,746 views 通用尺码。 仓储号参考: Mask, Extreme Cold Weather NSN[枪袋包市场分析;] 军用背包厂家 军用背包生产厂家 极寒保暖面罩(OG207) 12/12/19 Thursdayadmin2,948 views ...
3、总结: Wearing a mask can not only protect yourself, but also be responsible for your family, the virus can be transmitted to your family through your sneezing, so for the sake of your family, you should insist on wearing a mask. 戴口罩不仅可以保护自己,也对你的家人负责,病毒可以通过你...
Neck Gaiter Face Mask Cover Cold Weather Scarf Wraps Windproof Sports Headwear For Unisex, You can get more details about Neck Gaiter Face Mask Cover Cold Weather Scarf Wraps Windproof Sports Headwear For Unisex from mobile site on Alibaba.com
AUQ Ski Mask,Breathable Full Face Mask,Windproof Face Mask for Cold Weather Protection,Black White Ski Mask for Men and Women, UV Protection Mask, Suitable for Motorcycles and Snowboards Add $6.33current price $6.33White Ski Mask for Men and Wo...
Cold-weather mask 常由几层棉布构成,内夹棉絮。这类口罩通常只具有保暖的作用,可以阻隔较大颗粒的灰尘,但对于可吸入颗粒物几乎没有防护作用。 ▌活性炭口罩 Activated Carbon mask 活性炭口罩的活性炭层可增加对异味的滤除作用,但不能增加对颗粒物的防护效果。
Mask for cold 优质文献 相似文献Helmet-mask for cold weather and/or particulate laden environments A face mask comprising a head covering, a sealing means for isolating the head covering from the atmosphere when the head covering is worn, an air outlet and inlet section connected to the head co...
Cold weather mask for protection of faces against low temperatures and high ind velocities while providing for easy access to the mouth and nose. A wide range of adjustability to fit faces of varying
United States Patent US4300240 Note: If you have problems viewing the PDF, please make sure you have the latest version ofAdobe Acrobat. Back to full text