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A salt spray box is an environmental simulation device used to simulate salt spray corrosion conditions in marine environments or humid air containing salt, in order to accelerate the testing of the corrosion resistance of surface coatings on materials or products.
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GB/T 38597-2020 "Technical Requirements for Coatings with Low Volatile Organic Compound Content" was officially released on March 31, 2020 and will be implemented from February 1, 2021. This standard specifies that powder coatings belong to the category of low volatile organic compound content coating products. This provides clear definitions for promoting the use of low VOC content coatings in previous regulations such as the Air Pollution Prevention and Control Law, the Three Year Action Plan for Winning the Blue Sky Defense War, and the Comprehensive Management Plan for Volatile Organic Compounds in Key Industries. The national standard GB/T 35602-2017 "Green Product Evaluation Coatings" is applicable to water-based coatings, powder coatings, radiation cured coatings, high solid coatings, and solvent-free coatings, and specifies that powder coatings belong to green products.