Table 1.

Ten different kinds/brands of the surgical mask with respective characteristics (THE ONLINE MEDICAL DEVICE EXHIBITION, 2020).

	Brands	Basic characteristics
1	Non-woven surgical mask FM-04	✓Further Price reductions on Type II surgical face masks ✓Inco Terms (2020) ✓Fully certified
2	Non-woven surgical mask/type II/disposable/3-ply	✓Type II, Disposable, 3-ply, non-woven, breathable, adult surgical mask. ✓It is designed to prevent infections in patients and treating personnel by catching bacteria shed in liquid droplets and aerosols from the wearer's mouth and nose. ✓They are not designed to protect the wearer from breathing in airborne bacteria or viruses whose particles are smaller. ✓Three layers of filtering multiple protection ✓N90 3-ply disposable face mask made up of PP non-woven & filter paper & ES cloth ✓17.5 × 9.5 cm with blue color ✓Certification of CE(TUV) FDA EN14683
3	Disposable surgical mask/3-ply/non-woven/non-sterile	✓Disposable, 3-ply, non-woven, non-sterile, medical mask with earloop ✓Box packaging with Certificate ✓The filtering effect is greater than 95% ✓With CE, FDA certification ✓53 ∗ 38 ∗ 39 cm/10 kg
4	Type II surgical mask/polypropylene/disposable/non-woven	✓Polypropylene, disposable, 3-ply, non-woven, non-sterile, adult ✓To be worn to protect both the patient and healthcare personnel ✓A single-use, disposable device(s), provided non-sterile. ✓With three layers ✓Made up of polypropylene, (PP/PE) and fabric blocks dust and microbes (>99%). ✓17.5 × 9.5 cm (Adult); Packing: 50 pcs/box, 2000 pcs/carton; Color: Blue, Green, Pink, Yellow, Purple; Certifications: GMP, CE, FDA, EN 14683
5	Type IIR surgical mask SMSK001l	✓Norms: type IIR. Detail description was not found from the manufacturer's website
6	Type II surgical mask	✓Single-use 3-ply masks are intended to trap particles and aerosols of respiratory flows (saliva, secretions, etc.) emitted by the person wearing the mask while allowing them to breathe without difficulty. ✓They have a long nose strip which helps keep them on the nose and limits fogging. ✓The elastic bands, ear loops, are round and free of latex. ✓They also allow, with their waterproof external face, to protect against possible projections during surgical procedures in the operating room. ✓Accordance with standard EN ISO 15223-1
7	Non-woven surgical mask/disposable/3-ply HHAO MEDI	✓Disposable, 3-ply, non-woven ✓Disposable Medical Surgical Mask with CE (Regular CE certification, China export white list) ✓Executive standard: EN 14683:2019 Type IIR ✓Material: 25 g non-woven + 25 g fabric Melt blown cloth + 25 g non-wove ✓Color: blue; size:17.5 × 9.5 cm; sterilize: EO; Term of validity:2 years; Package data: 20 pcs/bag 40 pcs/box 2000 pcs/carton; Carton size: 60 × 42 × 42 cm
8	3-ply surgical mask/non-woven/2-ply TK-9249	✓Non-woven face mask ✓2-ply or 3-ply is available With ear loops or ties ✓Color: Green, Blue, White, Pink, etc.
9	Type II surgical mask/disposable/non-woven MP211	✓Disposable, non-woven ✓Disposable Surgical mask, CE marked ✓Composed of nonwoven fabric layer, filter material (melt-blown fabric), nose clip and mask belt. Product Size: 17.5 cm ∗ 9.5 cm; Package:10 pcs/bag, 5 bags/box,10 boxes/carton; Box Dimension: 25 cm ∗ 11.7 cm ∗ 11 cm; Gross Weight: 3.14 kg, Net weight: 2.14 kg
10	Type I surgical mask	✓Disposable medical face mask ✓Type: Flat earloop type ≥95% filtration ✓Layers: 3 (Inner layer and outer layer—Non-woven fabric, middle layer: melt blown fabric) ✓Size of mask: 17.5 cm ∗ 9.5 cm; HS code: 6307900010; Packing: 50 pcs/box, 40boxes/carton; Weight: 10.19 kg; Standard: EN 14683, YY/T 0969-2013