* Resistance to ignition: European Standard testing was used. An iron rod measuring 6 mm in diameter and 300 mm in length was heated at one end to a temperature of 650鈩? The heated end was pressed against the sample surface using its own weight for 5 seconds. The face shield did not catch fire nor glow red. * Protective films: Both sides of the visors are furnished with protective films to ensure protection against damage or scratches during transportation. These films can be easily removed before use. * Best optical quality: To provide users with the best vision possible and help them better focus on their task, Blue Eagle face shields have passed the highest levels of optical tests (Class 1), including spherical refractive power, astigmatic refractive power, prismatic refractive power, and light diffusion. * High-speed particle impact resistance: 120 m/s, The face shield is made using extrusion-grade polycarbonate (PC) with the highest specifications for mechanical strength, allowing it to withstand the impact of a 6 mm steel bead traveling at a speed of 120 m/s. * Impact resistance: Includes frontal and lateral impact resistance. * Quick and easy visor replacement PackageUnitMOQGW/KGNW/KG 50*40*50cm100pcs10018.520Plain Face Shield Protection website:http://www.way-hang.com/face-shield/plain-face-shield-protection/