德国采购需求：植物用硝酸钙，硝酸钙价格，硝酸钾粉

We are looking to purchase 1000 tons of ammonium-free calcium nitrate fertilizer and would appreciate it if you could provide us with your best pricing. We are interested in knowing not only the unit price but also any bulk purchase discounts or shipping options you might offer. Additionally, please inform us about the lead time for delivery and any available certifications or quality guarantees for the product. This information will help us make an informed decision and streamline the procurement process. Looking forward to your prompt response!