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I'm interested in sourcing a range of mattress protectors. Specifically, I'm looking for options in two common sizes. Please provide details about your available models, including material composition, features, and any certifications. Additionally, I'd like to understand your pricing structure for bulk orders, including any discounts for larger quantities. It would be helpful to know the lead times and shipping options as well. Looking forward to your prompt response so we can potentially move forward with an order.