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FAQ
Q: How can I contact you?
A: You may contact us by submitting an inquiry for the products you are interested in, through our online customer service, by email at sales@sonwu.com, via WhatsApp, or by phone. Our team is always ready to assist you.
Q: What products do you offer?
A: We specialize in the manufacturing and supply of high-purity peptide raw materials, including functional peptides and custom peptides for applications such as weight management, muscle building, beauty, nootropics, hair growth, and pharmaceutical development.
Q: Do you provide customized peptide products?
A: Yes. We offer comprehensive customization services based on customer requirements. Customers may provide product information such as CAS numbers, peptide sequences, or proposed synthesis routes. Our technical team will evaluate feasibility and provide professional recommendations accordingly.
Q: What purity levels are available?
A: We can supply peptide raw materials with different purity specifications depending on application requirements. Typical purity levels are ≥95% or higher, subject to product type and customer needs.
Q: What analytical methods are used for quality control?
A: We provide Certificates of Analysis (COA) based on analytical testing such as HPLC, UV, GC, ¹³C NMR, and TLC. In addition, we cooperate with independent third-party laboratories such as SGS and PONY when required, to ensure compliance with standards including CP, EP, and USP.
Q: How do you ensure product quality?
A: All products are manufactured under strict process control and undergo comprehensive quality testing, including identity, purity, and stability analysis. Batch records and quality documentation are maintained to ensure consistency and full traceability.
Q: What is your minimum order quantity (MOQ)?
A: MOQ varies depending on the specific peptide product and customization requirements. Please contact us with your product details for confirmation.
Q: Do you accept sample orders?
A: Yes. We accept small trial orders ranging from 1 g to 1 kg for quality evaluation. For larger quantities, we offer more competitive pricing, and special discounts may be available during promotional periods.
Q: Do you offer customized packaging services?
A: Yes. We provide flexible packaging options, including customized packaging sizes, materials, labeling, and documentation, tailored to customer requirements and transportation needs.
Q: How long is the production lead time?
A: Lead time depends on the product type, order quantity, and customization requirements. Standard products typically have shorter lead times, while custom peptides may require additional synthesis and testing time.
Q: What shipping methods do you offer?
A1: Express / Courier (door-to-door): DHL, FedEx, TNT, etc. Delivery usually takes 5–7 days.
A2: Air freight (port-to-port): Typically requires a minimum of 45 kg and takes 1–3 days, depending on destination.
A3: Sea freight (port-to-port): Delivery usually takes 10–35 days, depending on destination.
Q: How is customs clearance handled?
A1: Express shipments: In most cases, the recipient does not need to handle customs clearance. If any issues arise, our experienced team will assist promptly.
A2: Air and sea shipments: We cooperate closely with customers by providing the necessary documentation and support throughout the customs clearance process.
Q: Do you provide after-sales support?
A: Yes. Our after-sales services include technical support, documentation assistance, and prompt response to any quality- or delivery-related inquiries.
Q: How do you handle quality complaints?
A1: We take full responsibility and never avoid issues. All concerns are addressed through transparent communication to reach an optimal solution.
A2: If a confirmed quality issue is caused by us, we will provide a free replacement or issue a refund.
Q: What is your return policy?
A: We offer a no-reason return policy within 180 days, subject to our return service terms.