美国采购需求：氨基酸80粉，天然肥料氮，有机氮肥，植物蛋白肥，蛋白水解物肥料，夏季蛋白肥

I'm reaching out to inquire about your organic nitrogen products. We're looking for high-quality options that meet specific agricultural standards and can enhance soil health. It's essential for us to understand the available formulations and their respective benefits. Additionally, could you provide information on your pricing, availability, and any bulk order discounts? We are keen to establish a reliable supply chain and would appreciate your prompt response so we can make informed decisions moving forward. Thank you!