Pneumoconiosis is the most serious occupational disease that is harmful to the health of workers. Pneumoconiosis is mainly caused by fine dust such as inhalation of minerals, metals, abrasive materials and carbon materials. According to the authoritative report, China's pneumoconiosis cases and suspected pneumoconiosis cases nearly a million, there is no cure for pneumoconiosis medical means, therefore, need to prevent the injured from the root causes, wearing respiratory protection equipment to become the most limited protection measures The And select the appropriate respiratory protection equipment is the key.

At present, China has a number of production of dust masks, gas masks manufacturers, in the 84th China (International) Labor Protection Products Fair, there are nearly 40 respiratory protection enterprises exhibitors. Moreover, 3M and other foreign brands also stationed in China, enriched China's respiratory protection products market. So, in the face of these many product brands, consumers how to choose?

If the dust mask can not be very close to the face of the user, then the harmful substances will leak through the gap between the mask and the face, the protection function greatly reduced.