1, big win. Sheng Da is the common name of the company and product brand, and is a professional mask manufacturer in China. Located in Songjiang, China, a beautiful water town in the south of the Yangtze River. There are more than 20,000 square meters of production workshops, more than 20 technicians, 2 senior engineers, more than 300 sets of mask manufacturing machinery, and the annual production of more than 200 million dust masks. It is one of the largest mask manufacturers in China.
2. Three wonders. The main products of Rizhao Sanqi Medical Products Co., Ltd. are: medical masks, American N95 standard protective masks, production insurance, disposable surgical dressing bags, protective clothing, experimental clothing, bed sheets, suit covers, shopping bags, storage bags, wet wipes and other four series1more than 20 varieties. More than 90% of the company's products are sold to Japan, South Korea, Europe and America.
3.XB Beibei is a well-known mask brand in Shanghai. Beibei masks mainly purchase high-end filter materials and produce kn95 masks with high efficiency, low resistance and no odor. Beibei masks are designed with folding masks, cup-shaped masks, breathing valve masks, activated carbon masks and children's masks. To meet the needs of different people and different scenes.
Characteristics of a good mask
1, good facial fit. The air leaked from the mask with a gap is directly inhaled from the gap without passing through the filter material, which seriously reduces the protective effect. Leaks can also cause glasses or goggles to fog. Preferably, the leakage rate is less than 1.5%.
2, the protective effect should be high. The protective effect is the ability of the mask to block particles, which is a comprehensive embodiment of leakage and filtration efficiency. D, C, B, A, preferably Grade A, greater than 90%.
3. The inspiratory resistance should be very low. The higher the inhalation resistance, the more difficult it is to inhale, and the mask will have to be taken off after wearing for a period of time, so it is impossible to continue to protect. Preferably, the inspiratory resistance of KN95 mask is less than 50 Pa.