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I'm interested in sourcing clear whey protein isolate, with an anticipated annual volume of 10-30 metric tons. To help me evaluate your product, could you please provide detailed specifications? This would include information on protein content, processing methods, and any certifications that your product may have. Additionally, I'd like to know your pricing structure, including any bulk purchase discounts, payment terms, and lead times for delivery. Understanding these aspects will aid in making an informed decision. Looking forward to your prompt response.