Nanhe 8009 luxury low resistance silicone protective mask (body buckle interface)

Advanced liquid silica gel is soft, comfortable, and suitable for long time wear, which is suitable for long wear. The
buckle structure is convenient and quick for changing the filter cartridge.
four valve design and patented product, low resistance, less than 20% of resistance than the same imported products;
double breath valve design, nasal and oral expiratory valve, reduce hot gas in the cavity circulation, more comfortable. Suitable, the upper valve is concealed, and the lower valve cover is protected, so it is not easy to pollute;
it is easy to disassemble and clean;
the head hoop ring head shape design is suitable for Asian head type wearing, and the fitting is more suitable for the working environment of helmet wearing, with polyester spandex elastic band, which has more lasting elasticity;
it can be connected with filter box and filter cotton, which can be used as anti-virus or dust mask;
it meets the standard of GB 2890-2009, and GB 2890-2009 2626-2006 standard, obtained China La certification, QS certification;
appearance patent: 201630548543.7.
colour: Blue and grey