Material: 45# or 40Cr Carbon Structural SteelHeat treatment: High-frequency QuenchingHardening and tempering: AvailableSurface treatment: Original / Black or Grey Phosphate treatment/CustomizedMarking: Customized
Products Description: Disposable cartoon printed medical mask with a pattern is made of 3-layers,inside and outside layers are PP nonwoven,middle layer is high standard 99 filter paper. With Ear-loop style. Advantages 1.Directly manufacturer, disposable c