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Solar welding helmet
- Bright shading number:4#
- Dark shading number:9-13#
- Optical Class:1/1/1/2
- Delay Time:<0.1s
- Operating Temp.:-5℃~65℃
- UV transmittance:313nm<0.000002, 365nm<0.000002
- Infrared transmittance:780nm-1300nm<0.00027,1300nm-2000nm<0.00094
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