Shipping & Returns

1. Global shipping

LiyuPepLabs ships research products internationally where lawful, operationally practical, and supported by our carriers. Destination availability may vary by compound, customs route, sanctions status, export-control requirements, or local import restrictions. A country appearing at checkout is not a representation that every product can legally be imported there.

We do not currently accept orders addressed to mainland China, Hong Kong, Macau, Cuba, Iran, North Korea, Russia, Syria, Ukraine, or any sanctioned region or territory that our payment, carrier, export-control, or compliance screening does not permit. These destinations cannot be selected at checkout. We may also refuse or cancel an order involving a restricted person, entity, end use, or transshipment route even when the destination country is selectable.

2. Processing and delivery estimates

Orders are normally prepared Monday through Saturday on China Standard Time, excluding applicable holidays and operational closures. Orders paid in full are dispatched within 48 hours in normal conditions. Tracking is issued after carrier acceptance.

• Standard shipping: 4 to 14 business days after dispatch, depending on destination.
• FedEx International Priority: 4 to 7 business days after dispatch. Available on United States addresses only, charged separately at checkout, and not included in free shipping at any order value.

Delivery windows are estimates provided by the carrier and are not guaranteed by LiyuPepLabs. They exclude customs processing, local holidays, and delays caused by carrier disruption, weather events, or remote-area service. Processing may take longer during periods of high demand, limited stock, or events beyond our control. We will email you if an order is significantly delayed.

Order confirmation is not shipping confirmation. The confirmation email means your order has been received and payment authorised. A separate email carrying tracking follows once the parcel is accepted by the carrier. Once an order has entered processing or been dispatched it can no longer be cancelled, except as set out in section 8.

3. Carriers

We ship using FedEx and other reputable carriers. The carrier and service used may vary with package size, weight, destination and availability. We reserve the right to select the carrier and service that best suits an order, unless you have selected and paid for a specific shipping option at checkout.

4. Free shipping

Orders meeting the threshold shown at checkout, currently 500 USD, qualify for free standard shipping to eligible destinations. Free shipping applies to the standard service only. Expedited and special-handling services, including FedEx International Priority, are charged in addition at any order value. We may change the threshold, the qualifying criteria, or the available services at any time without notice.

5. Risk of loss

Risk of loss and title pass to the purchaser when we hand the package to the carrier. Once the carrier has possession, transit risk and loss are the responsibility of the purchaser, not LiyuPepLabs. We are not liable for parcels lost, stolen, damaged or destroyed while in the possession of the carrier, or misdelivered or returned because of an incomplete or inaccurate address supplied by the purchaser.

Where a parcel is lost, delayed, stolen or misdelivered in transit, any claim, trace or service request must be made with the carrier, and the purchaser is responsible for opening and pursuing it through the process operated by that carrier. On written request we may, as a courtesy and at our discretion, supply documentation available to us such as proof of shipment. We do not control, and accept no liability for, the determination reached by a carrier. Nothing in this section limits rights that cannot lawfully be excluded.

6. Address accuracy

Please provide a complete deliverable address, telephone number and recipient name. The purchaser is responsible for the accuracy of what is entered at checkout. Contact us promptly if a correction is needed, though we cannot guarantee that an address can be changed once fulfilment has begun.

If an incorrect or incomplete address causes a parcel to be returned to us, we will reship once corrected details are supplied, subject to payment of any further shipping charges. Alternatively we may, at our discretion, issue store credit less the shipping costs already incurred.

7. Import duties and legal responsibility

The purchaser is responsible for confirming before ordering that each product may lawfully be imported, possessed, stored, and used in the destination country. The purchaser is also responsible for import permits, taxes, duties, brokerage, customs charges, and accurate end-user or research documentation when required.

We may request additional information, cancel an order, or restrict a product or route when a compliance review cannot be completed. Orders rejected, detained, seized, destroyed, or returned because of local restrictions, inaccurate declarations supplied by the purchaser, or refusal to pay duties are reviewed individually and are not automatically eligible for refund or replacement.

8. All sales final: returns and refunds

Because storage conditions, seal integrity and chain of custody cannot be verified once research material has left our facility, all sales are final. General returns are not accepted. Do not send any product back without written instructions from LiyuPepLabs.

8.1 Eligible exceptions

A replacement, reshipment, store credit or refund will be considered only where:

• the shipment contains a compound, strength or quantity different from the order;
• a vial or tamper-evident seal arrives visibly damaged, or the product has a verifiable defect making it unsuitable for its intended research use;
• tracking supports loss in transit or delivery to the wrong address; or
• credible evidence indicates the supplied batch does not match its posted batch-specific certificate or stated specification.

8.2 Making a claim

Email [email protected] within 14 calendar days of delivery, or within 30 days of the last expected tracking event for a parcel that may be lost. Claims submitted outside those windows will not be considered.

Include the order number, the batch or lot number, and clear photographs of the shipping package and the affected vials showing the damage, defect or incorrect item, together with any supporting carrier or analytical evidence. Keep the product sealed and retain all original packaging until the review is complete. Opened, used or tampered products are not eligible under any circumstances.

8.3 Resolution

On review and verification of a valid claim we will, at our discretion, ship a replacement at no cost, issue store credit for the affected product, or refund to the original payment route where technically possible. We may require the original product to be returned at our expense before a replacement or refund is processed. We may decline a claim that does not comply with this policy, or that we determine to be fraudulent, excessive, or inconsistent with the issue described.

8.4 Not eligible

• change of mind, or no longer wanting the product;
• ordering the wrong product or strength;
• any product opened, used, or with a broken seal;
• dissatisfaction with quality that cannot be evidenced by analytical testing;
• claims submitted after the windows in section 8.2;
• damage caused by storage, handling or use after delivery; and
• problems arising from an unlawful destination or use.

9. Payment disputes

If something is wrong with an order, contact [email protected] before opening a chargeback or payment dispute so that it can be investigated. Raising a dispute without contacting us first may result in suspension of the account and refusal of future orders. This does not remove any non-waivable dispute rights available under applicable law.