德国采购需求：小檗碱、小檗碱的益处、盐酸小檗碱的益处、盐酸小檗碱粉、盐酸小檗碱评价、盐酸小檗碱的用途

I'm looking to source synthetic Berberine HCl with food-grade quality for our production needs. Specifically, I'd like to inquire about a requirement of approximately 3-4 tons per year. It's crucial that the product meets the necessary standards for food applications, as we are committed to providing safe and effective ingredients. Could you please provide a detailed quotation including pricing, lead times, and any available certifications? Additionally, information about packaging options and payment terms would be appreciated. Looking forward to your prompt response so we can move forward efficiently.