line boring and bore welding have been manufactured in order to service to the fast increasing demand for on site line boring machining and welding repairs works , like the mining projects and heavy machinery ,excavators Our line boring machines are perfe
It is characterized by good hygroscopicity, soft handle, sanitary and comfortable wearing; Easy and warm keeping, comfortable and appropriate wearing; Soft, close fitting and air permeability.
From H11 to H14 filtration efficiency, high efficiency, but low pressure drop. Composite with pp spun bond, melt blown, glass fiber, PET spun bond, for dust, pollen, mold spores, dust mites, and other allergens. Generally, it is made to panel filter, cart