金价上涨引发消费者纯度焦虑，足金就是足金 999 吗？二手回收价格有不同？

Core Viewpoint - Recent consumer concerns regarding the gold purity of brands like Lao Feng Xiang have emerged, particularly as international gold prices rise, leading to increased sensitivity towards gold content among consumers [1] Group 1: Industry Standards and Regulations - The term "足金" (pure gold) is defined by national standards, requiring a minimum gold content of 990‰, which means terms like "千足金" (thousand pure gold) are no longer used in the market since May 4, 2016 [14] - Higher purity gold products can be indicated through company standards, but there is currently no established international standard for products like "万足金" (ten thousand pure gold) [14] Group 2: Consumer Sensitivity and Market Practices - Consumers are increasingly concerned about gold purity, especially with rising gold prices, leading to heightened scrutiny of product labeling and quality control by brands [17] - In the second-hand market, the default buyback price is based on "足金999" purity, and any deviation in purity will adjust the buyback price accordingly [15] - Variations in gold purity can arise from production processes, and slight differences in purity are often due to manufacturing tolerances [16] Group 3: Brand Responses and Consumer Rights - Brands are expected to adhere to strict quality control processes, and they are obligated to cooperate with consumers for testing if purity disputes arise [17] - Consumers have the right to request price adjustments or exchanges if the actual purity is found to be below the stated level [17]