ASTM Standard Level 3. "美國進口熔噴不織布濾芯，信心保証。Latex Free，低致敏材質，透氣度高不悶熱 包邊立體設計，佩戴說話不移位，面部更舒適。 阻隔微粒PFE＞99%，阻隔病毒VFE＞99%，阻隔細菌BFE＞99%。尺寸：175mm x 95mm
ASTM LEVEL 3. EN14683-2019 Type II，TypeIIR
-Three-Layer non-woven, effectively against PM 2.5, dust and pollen.
-Middle layer filter passes the BFE and VFE tests average >99%, PFE >99%, effectively prevent bacteria, virus and micro dust.
-Surface barrier against fluid of 160mmHg.
-Inner skin-friendly fabric absorbs moisture from the mask, more breathable.
-High-quality fabric & earloop to feel comfort under prolonged usage.
-3D fold design for more breathable and easy speaking.
-Plastic nosepiece easy fit with the face shape.- Non sterile