日本采购需求：牛骨胶原蛋白肽、牛骨肽、牛胶原蛋白粉、牛肽、牛肽粉、抗衰老牛肽粉

I'm interested in your bovine peptides, specifically those containing type 2 peptides aimed at joint repair. Could you provide more detailed information about the different variants available, their molecular weights in Daltons, and any specific benefits they offer for joint health? Additionally, I'd like to know your pricing per kilogram for these products, along with any minimum order quantities or bulk purchase discounts you might offer. Looking forward to your quick response!