Shipping policy

Shipping Policy Processing Time All orders are processed within 3–5 business days after payment confirmation. Shipping Time We ship from China. Estimated delivery time to the United States is approximately 15–25 business days. Please note that delivery times may vary due to customs clearance and other factors outside our control. Shipping Costs Shipping costs are calculated at checkout based on your order and location. Order Tracking Once your order has shipped, you will receive a confirmation email with a tracking number so you can monitor your shipment. Customs & Duties International orders may be subject to customs fees or import duties. These charges are the responsibility of the customer and are not included in our product prices or shipping costs. Lost or Delayed Packages If your package is significantly delayed or lost, please contact us at leiteng0626@gmail.com and we will do our best to resolve the issue. Contact Us Email: leiteng0626@gmail.com Website: www.optivitalab.com