High whiteness (reputed as Chinese Whiteness), low oil absorption, steady in room temperature and dehydrated to alumina while heating, to make the products have the function of flame retardant.It’s a good flame retardant filler because that no toxic and c
1. 175 mm × 95 mm / 6.89in. × 3.72in.2. Nose clip is located on the upper edge ofthe mask, and the outside of the mask is darker in color.3. Nose clip: length >80 mm (3.15in.); width approximately 3 mm (0.12in.).4. Ear loop: 180 mm (7.09in.) in length and