美国采购需求：抗坏血酸四异棕榈酸酯、羟基频哪酮视黄酸酯、补骨脂酚、烟酰胺、泛醇、天然维生素E

Thanks for your prompt response! I'd love to get a deeper understanding of the products you mentioned. Specifically, could you provide details regarding the materials used, available specifications, and any customization options? Additionally, it would be really helpful to know the pricing structure, lead times, and shipping options. If you have any catalogs or brochures available, please share those as well. Looking forward to your reply!