Group 1 - The sales of various sun protection products such as sun-protective clothing, hats, sleeves, and masks have surged since the beginning of summer [1] - Shanghai market regulatory authorities conducted tests on a batch of sun protection clothing and accessories, revealing that some products had non-compliant labels, inconsistent fiber content, and inadequate UV protection performance [2][3] - The testing results indicate a decreasing trend in the performance or quality issues of sun protection products, with a growing concern over misleading advertising by merchants [3] Group 2 - Experts suggest that while higher UPF values indicate better sun protection, consumers should not blindly pursue excessively high UPF ratings, as UPF 40+ and UPF 50+ are the only compliant labeling methods according to existing standards [4] - Research shows that when UPF exceeds 40, the UV damage to the skin is minimal, and the difference in UV blocking between UPF 500 and UPF 1000 is only 0.1%, while production costs increase significantly [4] - Consumers are advised to consider the design, breathability, cooling properties, and moisture-wicking characteristics of sun protection products, in addition to ensuring they meet relevant standards [5]