The gas can be argon or nitrogen to blow, clean and protect the lens, because if there is dust during the cleaning process, the protective lens can easily be stained, and the protective lens can be easily burned. In actual use, most customers will choose to use an air compressor with a drying function, because argon or nitrogen tends to have low pressure and is insufficient. However, the air compressor must be equipped with a drying function, otherwise if there are water droplets, it will easily burn the lens and the pressure will be average. At 6mpa-7mpa.
