Shipping policy

This Shipping Policy explains how Duoduostudy processes and ships orders placed through https://duoduostudy.com.

Order processing

Orders are generally processed within 1-2 business days after payment has been successfully confirmed. Processing time begins on the next business day after the order is placed. Orders placed during weekends, holidays, promotions, or periods of high demand may require additional processing time.

Shipping options

· Standard shipping: Free for orders shipped to the United States. Delivery is estimated at 5-8 business days after the order has been processed and dispatched.

· Expedited shipping: $15 per order. Delivery is estimated at 1-2 business days after the order has been processed and dispatched.

The delivery windows above are estimates and are not guaranteed delivery dates. Carrier transit time may vary due to weather, carrier capacity, address issues, holidays, and other events outside our reasonable control.

Tracking

Tracking information is provided when available and will be sent to the email address supplied at checkout. Tracking may take some time to update after the carrier receives the package.

Address changes

Please review your shipping address carefully before placing an order. If you need to request an address correction, contact us as soon as possible. We cannot guarantee that an address can be changed after an order has entered processing or been dispatched.

Address change requests: TheresaLittle5124@outlook.com.

Delivery issues

If tracking shows that a package was delivered but you cannot locate it, first check with household members, neighbors, building management, and the carrier. If the issue remains unresolved, contact us with your order number and tracking details.

Delivery support: TheresaLittle5124@outlook.com.

Taxes and charges

Shipping fees, taxes, and any other applicable charges are shown at checkout when available. Any third-party charges imposed by a carrier or government authority, if applicable, are handled according to the checkout information or applicable law.