DLS and CETECOM authorized Qi test labs
The Wireless Power Consortium has authorized two additional test labs to perform Qi compliance testing.
- DLS is based in Wheeling (IL,) USA. http://www.dlsemc.com
- CETECOM is based in Essen, Germany, http://www.cetecom.com
Together with TUV Rheinland's labs in Taiwan and Korea, Qi compliance testing is availble now in four locations.
If you see the Qi logo 
on a product, that product was tested by one of these 4 test labs. These tests make sure that the product works correctly. The Qi logo on your wireless charger makes sure your charger can charge all phones that have the Qi logo. Independent testing is essential to deliver that promise!