Last time, I introduced how we select crystals for the evening bags in our factory, please check it at https://www.baginstore.com/2026/02/02/the-material-secrets-behind-a-high-quality-crystal-evening-bag/. In that article, I mentioned “AB Crystal”, some asked me about what exactly this crystal is in the email, so today, I will give a detailed analysis. When selecting crystal evening bags, many customers will…