美国采购需求：干酪乳杆菌粉、后生元补充剂、肠道健康粉、消化支持补充剂、增强免疫力的益生菌粉、肠道菌群后生元

I'd like to request a quotation for Lactobacillus Casei postbiotic powder in a 1 KG package. Please include the Certificate of Analysis (COA) with the quote. It's important for us to ensure the quality and efficacy of the product, so having this information upfront would be greatly appreciated. Additionally, I would love to see your catalog of postbiotics. We are exploring various options, and having a comprehensive view of your offerings will undoubtedly assist us in making an informed decision. Looking forward to your prompt response with all the necessary details!