The main precautions for the use of automatic darkening welding protective mask are as follows:
1. The automatic darkening welding mask cannot be used for high-intensity overhead welding and upward-looking cutting operations, because the operation has the risk of molten metal dripping and burning. When wearing an electric welding dust mask, pay attention to avoid the electric welding mask from affecting the airtightness of the dust mask.
2. Please refer to the operating instructions when using the automatic darkening welding mask. When used in arc welding and gas welding operations, it protects the wearer's eyes and face from harmful visible light, ultraviolet, infrared radiation, sparks and splashes.
3. Please do not use it for any electric welding operations without training on the use of the automatic darkening welding mask.
4. Do not mix and match the lenses of other brands of auto-dimming welding masks randomly, which will attenuate the protective performance of the product.
5. Try to use original parts, such as inner protective lens and outer protective lens, according to the product part number in the manual of the automatic darkening welding mask. Substituting other products may damage the product's protective function and invalidate the warranty, or cause the product's use effect to be inconsistent with the product's protection level and certification.
6. After the frame is broken or scratched, it will affect the field of view and seriously reduce the protection ability, so please replace it as soon as possible.
7. The operating temperature is -5°C (23°F) to +55°C (131°F). When the ambient temperature is low, the reaction speed of the liquid crystal material in the lens frame group will be reduced, but its various protections will not be affected performance.
8. Be sure to install an outer protective sheet on the outside of the frame box. Failure to install the protective sheet may cause damage to the frame box.
9. Replace the sweat-absorbent belt regularly, and replace worn-out parts with parts provided by the supplier.
10. Do not store the auto-darkening welding mask frame box in a place close to heat or damp; do not use alcohol, gasoline or thinner to clean the frame box, and do not immerse it in water.
11. Replace the protective sheet after it is broken or scratched. Do not touch the filter lens when changing.
12. If you wear myopia glasses and other products, please pay attention, when the automatic darkening welding mask is severely impacted, it may be deformed, which will cause the mask to contact the glasses and cause injury to the user. 
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