Shipping and delivery
We are proud to offer international shipping services that currently operate in over 200 countries and islands worldwide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.
How do you ship packages?
Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.
Do you ship worldwide?
Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.
What about customs?
We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.
How long does shipping take?
Shipping time varies by location. These are our estimates:
| Location |
*Estimated Shipping Time |
| United States |
10-30 Business days |
| Canada, Europe |
10-30 Business days |
| Australia, New Zealand |
10-30 Business days |
| Central & South America |
15-30 Business days |
| Asia |
10-20 Business days |
| Africa |
15-45 Business days |
*This doesn’t include our 2-5 day processing time.
Do you provide tracking information?
Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.
My tracking says "no information available at the moment".
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.
Will my items be sent in one package?
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you have specified combined shipping.
If you have any other questions, please contact us and we will do our best to help you out.
Refunds & returns policy
Order cancellation
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- You do not receive them within the guaranteed time (45 days not including 2-5 day processing)
- You receive the wrong item
- You do not want the product you have received (but you must return the item at your expense and the item must be unused)
We do not issue the refund if:
- Your order does not arrive due to factors within your control (e.g. providing the wrong shipping address)
- Your order does not arrive due to exceptional circumstances outside our control (e.g. not cleared by customs, delayed by a natural disaster)
- Other exceptional circumstances outside the control of tech.diydynamic.com
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on page.
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
Exchanges
If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
Y***d –
Fast delivery. Standard packing. I haven’t checked in work yet. I hope everything matches the description. Thank you seller!
П***ч –
The seller sent it to the post office, and the Russian mail mixed up the address. Instead of Moscow, they were sent to Yaroslavl. Noticed and opened the dispute in time. The shipping address has been corrected. Externally, the module corresponds to the photo of the store.
zahidislam2000@gmail.com –
Thank you for your feedback! We’re glad the issue was resolved and hope the module meets your expectations. Let us know if you need any assistance!
Customer –
All whole, thank you, not checked yet
Д***ч –
It’s okay, it’s working. Small and comfortable size. I recommend it.
В***ч –
Module is made qualitatively. Recommend!
l***r –
The goods received pretty quickly. Checked for performance, everything works without problems. I’m satisfied. Thanks to the seller.
I***t –
Done well, only the transformer was damaged, possible for transportation.
Customer –
Fast shipping. Working fine. Thanks!
M***c –
super
Y***h –
Looks like everything is whole.
Д***ь –
Transformer core dangles.
S***o –
ok
A***W –
Delivery was very very fast!! However, it did not work. Battery Vin was 11.6V. AC Vout was 0 21V (instead of 220Vac) at no load. Jumper was connected. See pic. If Seller cannot resolve, I will ask for Refund.
zahidislam2000@gmail.com –
Thank you for your feedback! We’re sorry to hear about the issue. Please ensure the input voltage is stable at 12V and connections are secure. If the problem persists, contact our support team with details, and we’ll assist or process a refund if needed.
Ж***ч –
The device does not meet the requirements. Burned down without even starting to work. After connecting the supply voltage 12 volts, and the load 100 watts, smoke came, most likely from the transistors. Here’s such a good device. I do not recommend!!!
zahidislam2000@gmail.com –
Thank you for your feedback! We’re sorry to hear about this issue. Proper heat sink installation and precise connections are crucial for high-load use. Please contact our support team, and we’ll help resolve this promptly.
t***k –
Delivery on time. Packed well, I haven’t checked in work yet.