Frequently Asked Questions

Our minimum order quantity varies by product:

• Research peptides: 100g minimum for standard products
• GLP-1 peptides (Semaglutide, Tirzepatide): 50g minimum
• Cosmetic peptides: 100g minimum
• Custom synthesis: Discussed on a case-by-case basis

For sample evaluation, we offer smaller quantities. Please contact us for details.

Yes, we offer custom peptide synthesis services. Our capabilities include:

• Peptides up to 100 amino acids in length
• Various modifications (acetylation, amidation, PEGylation, etc.)
• Specialty amino acids and D-amino acids
• Cyclic peptides and stapled peptides

Please provide your sequence and specifications for a quote. Lead time is typically 2-4 weeks depending on complexity.

Yes, we provide free COA samples for evaluation purposes. You can request a sample along with the Certificate of Analysis (COA), HPLC chromatogram, and MS spectrum to verify the quality before committing to a larger order.

Sample quantities are typically 1-5g depending on the product. Shipping costs for samples are the customer's responsibility.

We specialize in peptide raw materials across several categories:

• GLP-1 peptides: Semaglutide, Tirzepatide, Liraglutide, Retatrutide
• Cosmetic peptides: GHK-Cu, Argireline, Matrixyl
• Research peptides: BPC-157, TB-500, Melanotan II
• Hormone peptides: HGH fragments, IGF-1, CJC-1295

You can request a quote through several channels:

• Fill out the inquiry form on our contact page
• Email us directly at sale1@qianmiaopeptide.com
• Contact us via WhatsApp for quick responses

Please include product name, quantity needed, purity requirements, and delivery destination for accurate pricing.

We offer premium purity grades to meet different application requirements:

• Standard grade: ≥99% purity
• Pharmaceutical grade: ≥99.5% purity with additional testing

All of our products exceed 99% purity (HPLC). Specific purity requirements can be discussed for custom orders.

Every batch undergoes comprehensive testing:

• HPLC purity analysis
• Mass spectrometry (LC-MS) for identity confirmation
• Water content analysis (Karl Fischer)
• Amino acid analysis (upon request)
• Endotoxin testing (for pharmaceutical applications)

All test results are documented in our Certificate of Analysis (COA).

Our facilities and processes are certified to international standards:

• ISO 9001:2015 Quality Management System
• GMP-compliant manufacturing
• Class 100,000 clean room facilities
• Regular third-party audits

Copies of certifications are available upon request.

Yes, we welcome facility audits from customers and regulatory bodies. We can arrange:

• Virtual facility tours
• On-site audits (with advance scheduling)
• Documentation review

Please contact us to schedule an audit visit.

We offer multiple shipping options:

• Express courier: DHL, FedEx, UPS (3-7 days)
• Air freight: Cost-effective for larger orders (7-14 days)
• Sea freight: Best for bulk orders (25-45 days)

Cold chain shipping is available for temperature-sensitive products.

We ship to over 80 countries worldwide, including:

• North America: USA, Canada, Mexico
• Europe: UK, Germany, France, Netherlands, and 20+ others
• Asia-Pacific: Japan, Korea, Australia, Singapore, India
• Other regions: Brazil, UAE, Israel, South Africa

Contact us to confirm shipping availability to your location.

We use professional packaging to ensure product integrity:

• Vacuum-sealed aluminum foil bags
• Light-protected containers
• Desiccant packets to control moisture
• Insulated boxes with ice packs or dry ice when required
• Tamper-evident seals

All packages include proper documentation including COA, MSDS, and shipping labels.

We provide comprehensive export documentation to facilitate customs clearance:

• Commercial invoice
• Packing list
• Certificate of Analysis
• MSDS (Material Safety Data Sheet)
• Certificate of Origin (upon request)

Import customs clearance is typically the buyer's responsibility. We can recommend freight forwarders experienced with peptide shipments if needed.

All shipments are fully insured. In the rare case of damage or loss:

• Contact us within 48 hours of delivery (or expected delivery date)
• Provide photos of damaged packaging/products if applicable
• We will file an insurance claim and arrange replacement or refund

Our customer satisfaction rate is 99.5% and we stand behind every shipment.

We accept various payment methods to accommodate different preferences:

• Bank Transfer (T/T): Most common for bulk orders
• PayPal: Available for smaller orders
• Western Union: Available in select regions
• Letter of Credit (L/C): For large orders from established clients

Payment terms are typically 100% advance for new customers. Credit terms may be available for repeat customers with established history.

Yes, we offer flexible payment terms for established customers:

• Net 30 terms after 3+ successful orders
• 50% deposit / 50% before shipping option
• Credit limit evaluation based on order history

Please discuss payment terms with your account manager to find the best arrangement.

We stand behind our product quality with a comprehensive guarantee:

• Full refund if product doesn't meet stated specifications
• Replacement or refund for damaged shipments
• Quality issues must be reported within 30 days of receipt
• Custom synthesis orders are non-refundable once production begins

Please contact us immediately if you have any quality concerns. We resolve most issues within 48 hours.

Yes, we offer volume discounts based on order size:

• Quantity breaks at 500g, 1kg, and 5kg
• Additional discounts for recurring orders
• Special pricing for long-term contracts

Contact us with your requirements for a customized quote.