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In daily life, sunlight exposure is a very common environmental phenomenon. Polymer materials such as coatings and plastics often appear discoloration, chalking...
According to the requirements of the "Dangerous Goods Air Transport Regulations IATA DGR (Version 63)" newly released in January 2022, small lithium batteries c...
In daily life, sunlight exposure is a very common environmen...
According to the requirements of the "Dangerous Goods Air Tr...