... available.Colorwhite /blue /green /pink/yellowSize17.5x9.5cm/14.5x9cmMaterial and weight20gPPx22gMBx25gPPStyleMedical, flat, ES purifying, active carbon, solid, cup, valve ... cleanroom paper (SMT), antistatic garment, antistatic gloves, antistatic shoes and sticky dust series. Our products are tested by US NELSON ... free to contact me. Thank you! Disposable masks used in electronic products' workshop