RadbKao™ is owned and operated by Guangnian Gravity (Shenzhen) Technology Co., Ltd.

Business Address: Room 702, No. 7 Xintie Street, Bantian Community, Bantian Subdistrict, Longgang District, Shenzhen City

Customer Support: service@radbkao.com

Most in-stock orders are normally processed within 1–3 business days after payment authorization. Processing time is separate from shipping transit time.

For standard shipping to supported destinations in the United States, estimated carrier transit is generally 5–12 business days after dispatch.

Available shipping methods and applicable charges are displayed during checkout before payment is completed. If a free-shipping offer applies, that eligibility will be shown before checkout is completed.

Depending on inventory availability and delivery destination, orders may be fulfilled through our own operations or appropriate fulfillment partners. The physical shipping origin may differ from the business registration address.

Once an order has shipped and tracking is available, a shipping confirmation or tracking update will normally be sent to the email address provided at checkout.

Contact service@radbkao.com with your order number if tracking has not updated for an extended period, a shipment appears lost, or a package marked delivered cannot be located after reasonable checks. We will review the available shipment information and assist with reasonable next steps.

Eligible products may be returned within 30 calendar days after confirmed delivery.

Email service@radbkao.com with your order number, the product you wish to return, the reason for the return, and relevant photos or videos where necessary. After approval, Customer Care will provide the appropriate return warehouse address and instructions.

Customers are generally responsible for return shipping on preference-based returns. If a damaged, defective, incorrect, incomplete, or materially misdescribed item is confirmed, we will provide an appropriate solution without requiring the customer to bear the reasonable return cost caused by the qualifying issue. No separate restocking fee is charged for approved eligible returns.

Contact us as soon as reasonably possible and, where reasonably possible, within 7 days after delivery. The 7-day period is a recommended reporting timeframe only and does not reduce the 30-day return window or limit applicable legal rights.

After an approved return is received, inspection is generally completed within 5 business days. Approved refunds are generally processed to the original payment method within 5–10 business days after the returned product has been received, inspected, and approved. The payment provider may require additional posting time.

Contact us as soon as possible and preferably within 12 hours after purchase. Later requests may still be reviewed if fulfillment has not begun, but cancellation or modification cannot be guaranteed once processing or shipment preparation has started. No cancellation fee is charged for an order successfully canceled before fulfillment.

Transactions on radbkao.com are processed in United States Dollars (USD).

Email service@radbkao.com. Customer Service Hours: Monday–Friday, 9:00 AM–6:00 PM PST.