Arc flash protection (European standard) Certified according to EN166 and GS-ET-29 (Supplementary requirements for testing and certification of face shields for electrical work). Best optical quality To give users the best possible vision and help them to better focus on their task, the protective visor has passed the highest levels of optical tests (class 1), including spherical refraction, astigmatic refraction, prismatic refraction and light scattering. Impact resistance Includes frontal and lateral impact resistance. The protective visor is made of polycarbonate (PC) with the highest specifications for mechanical strength, allowing it to withstand the impact of a 6mm steel ball moving at a speed of 190 m/s. The large visor provides a wide field of vision and protection against splashes and liquids. An iron rod measuring 6 mm in diameter and 300 mm in length was heated at one end to a temperature of 650 ℃. The heated end was pressed against the test surface with its own weight for 5 seconds. The protective visor did not catch fire and did not glow red. The protective visor is tested and prevents the penetration of a steel ball with a diameter of 6 mm heated to a temperature of 900 ℃ within 5 seconds. This protective visor is provided with a chin guard to protect the chin.