All products strictly adhere to the following standards: United States Pharmacopeia/European Pharmacopoeia/American Federal Communications Commission standards, EU REACH registration standards (excluding any specific harmful substances), and stability guarantee standards (remaining effective for at least 24 months under specific storage conditions). These standards will be modified according to customer requirements (for example, customizing compounds with specific functional groups), while maintaining complete traceability and a minimum base purity level of ≥99.5%. This will ensure consistency between standard products and customized products.