Winsen MQ135 Semiconductor Sensor for Air Quality

Shipping and Delivery Policy

1. Shipping Process:

• Orders are processed within 1-2 business days after payment confirmation.
• Delivery time varies based on location and selected shipping method, typically ranging between 3-7 business days.
• We partner with trusted courier services to ensure timely and safe delivery.

2. Shipping Charges:

• Shipping charges are calculated at checkout based on the delivery location and package weight.
• Free shipping may be available for orders above a specified amount, as mentioned on our website.

3. Order Tracking:

• Once your order is shipped, you will receive a tracking ID via email or SMS to monitor the shipment status.

4. Delivery Address:

• Please provide a complete and accurate delivery address to avoid delays.
• We are not responsible for delivery failures due to incorrect or incomplete address details provided by the customer.

5. Delivery Issues:

• If a package is delayed, lost, or damaged during transit, please contact our support team immediately.
• Claims for lost or damaged items must be reported within 48 hours of delivery.

6. No Return Policy for Opened/Soldered Products:

• We do not accept returns for products that have been opened, used, or soldered.
• Ensure you verify product compatibility before purchase, as returns will only be accepted for unopened and unused items in their original packaging.

7. Refund Policy:

• Refunds will be issued only for canceled orders before shipment or wrong/damaged items received (subject to investigation).
• No refunds or replacements for products that have been tampered with, soldered, or physically damaged by the customer.