Direct B2B Wholesale & Contract Sourcing

Request a Quote & B2B Wholesale

Source high-purity research grade peptides and active cosmetic raw materials directly from our manufacturing center. Get volume tiered pricing, custom batch synthesis, and full analytical batch documentation (COA, HPLC, HRMS).

Wholesale Procurement Request

Fill in your target product, batch quantity, and purity requirements.

Wholesale Sourcing Request

Get HPLC reports, MSDS sheets, and bulk wholesale volume discounts.

Direct Sales Channels

Email Desk:info@cospep.com
WhatsApp:+1 6802556637

4-Step Procurement Process

1
Inquiry & RFQ SpecificationSpecify sequence, purity (≥99%), salt form, and volume required.
2
Technical Check & QuotationOur sales chemists provide tier pricing, batch COA, and HPLC chromatograms.
3
Contract & Quality SynthesisFinalize purchase order and commence custom synthesis or packaging under nitrogen.
4
Express Cold-Chain DispatchAir shipment with thermal insulation and complete customs clearance documentation.

Direct Sourcing Guarantees

  • Direct factory wholesale without intermediary markup
  • HPLC and HRMS testing report included with every batch
  • Temperature-controlled courier (FedEx / DHL express)
  • Flexible payment & customized private labeling options
B2B Volume Procurement Matrix

Volume Procurement & Batch Synthesis Tiers

Transparent batch scaling starting from 1g pilot scale to 500g+ commercial manufacturing lots. Verified chromatographic purity (HPLC ≥99.0%) and complete analytical release documentation.

TIER 1 • PILOT & R&DIn Stock / Quick Dispatch
1g – 10gLaboratory Evaluation & Pre-Formulation

Designed for chromatographic method validation, secondary assay verification, cosmetic active trials, and university or biotech pilot screening.

  • HPLC Purity ≥99.0% Guarantee
  • Individual Batch COA & HRMS Spectra Included
  • Lyophilized Powder in Serum Vials with Nitrogen Purge
  • 24–48h Dispatch with FedEx / DHL Express
Request 1g–10g Quote
★ MOST REQUESTED WHOLESALEBatch Dedicated
10g – 50gFormulation Scale & Commercial Trials

Preferred wholesale volume for skincare brand formulation runs, contract testing series, and continuous analytical supply with volume-discounted rates.

  • Batch-Dedicated Preparative HPLC Fractionation
  • Custom Salt Exchange (Acetate, TFA, or HCl)
  • Fluorinated Bottle / Argon Shielding
  • Significant Volume-Tier Discount Structure
Inquire Wholesale 10g–50g
TIER 3 • BULK PRODUCTIONFactory Contract
50g – 500g+Direct Factory Synthesis & Contract Supply

Direct manufacturing synthesis agreements for high-volume brand requirements, regular commercial supply programs, and scheduled split-batch releases.

  • Direct Factory Manufacturing Price (Lowest Price Guarantee)
  • Comprehensive Analytical Dossier (KF, NMR, Bioburden)
  • Custom Cleanroom Aliquoting & White-Label Packaging
  • Scheduled Release Shipping & Dedicated Account Manager
Negotiate Bulk Contract