1, double tank type mask, breathing more light, large window design, keep the wearer the wide field, 2 unique central adapter design, downward damp breath, without affecting the line of sight, 3 high strength headband, good elasticity, strong elasticity, durable, 4 main body part adopts advanced silicone material, comfortable and durable. Easy to clean and maintain 5, this product belongs to mask components, only the main mask (can not be used alone, with 6000 series filter box and filter cotton and other accessories used)Grace Wu wu_grace15@aliyun.com skype:wu.constance5
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China [CN] 
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