Our factory produces high-quality welding filters, and our Auto Darkening Welding filter with 1/1/1/1 optical class is no exception. This advanced technology provides superior clarity and reduces eye strain, making it easier for welders to see their work. The optical class rating ensures distortion-free vision, allowing for precise welds. Our filters also feature a quick and smooth transition from light to dark, protecting the eyes from harmful UV and IR rays. Trust in our factory's commitment to excellence, and choose the best for your welding needs.