Specification of our product as followings:- Product Name: Disposable Surgical Mask, 3 or 4 ply facemask- Certification: CE, FDA, CFS, ISO;- BEF 99%- 03 or 04 layers: Melt Blown Filter, 3 ply, ear loops;- Size: Adult 17.0 x 9.5cm;- Packaging: 50 pieces / Box; 50 boxes / Carton;-,Delivery by: Air, Sea- Delivery Fee: On Buyer;- Made in Vietnam