美国采购需求：肽、肽粉、肽原料粉、人体生长肽、人体生长、类固醇粉

I'm looking for suppliers who can provide high-quality raw powders for specific peptide products. We are interested in sourcing a variety of peptide powders for our upcoming projects, focusing on key research and development areas. Could you provide details on the pricing, minimum order quantities, and lead times for these products? Additionally, I'd like to know about your quality control processes and any certifications you hold. Your prompt response will be greatly appreciated as we are keen to establish a reliable partnership.