I’m sourcing high-purity research peptides—GHK-Cu (Copper Tripeptide-1), Melanotan II, and Retatrutide (LY*****)—from Chinese manufacturers. 98%+ purity, full COA with HPLC, MS, heavy metals, endotoxin. Start at 100–500 mg each. Ready-to-ship vials, private labels with my branding, neat packaging. Open to dropship or bulk. Send your best quote, lead time, and sample reports.