<Br><B>These are our troubleshooting as your kind reference to solve your problems.</B><Br><Br> 1. Please kindly check your received items, if you found the package was unsealed or broken, please contact us; we had professional team to make sure the effectiveness, compatibility and safety on your item. Better help you reduce problems.<Br> 2. When you took out of your item, please check it and make sure it was 100% same as our advertisement. If it was not, please do feel free to contact us to get assistance. We will take responsibility for your all loss.<Br> 3. If you found the item was incompatible or defective, Please contact us, we will ship another one quickly. After you received another effective one, we will refund you shipping charge for returning the defective one.<Br><Br> 4. We had a well-trained team to take all responsibility for after selling service. We are appreciated that you could contact us to get the most effective assistance. We will build the most convenient communication to help you install your item correctly. Even we will solve your unpredictable problems on communicating with each other.<Br><Br> 5. Please do contact us when you need any assistance, we promised to reply your issues in 12 hours. You will get the best solution from our premium service team.