Transaction•if the shopper can't discover a similar product, the customer can ship us the product and model, and we can present it for you.• After installation, if not working, please contact us as quickly as possible, and our engineers will help you remedy the problem.• on the time of delivery, please confirm the correctness and completeness of the goods. If the products are improper or damaged, please refuse to sign and get in contact with us.• one hundred pc new meaning new product.• Our electrical components voltage is 220 V, in case your country voltage is different, please touch us• Warranty:3 months guarantee, alternative and warranty. The customer shall pay for the transportation despatched back• the default delivery is Buydo standard delivery.• if you would like diversified delivery methods, please contact us, we can provide the following shipping tricks :DHL, EMS, UPS, FEDEX• Customer pride is vital for us. Please dont depart any neutral or detrimental feedback before contact us feedback isn't the best strategy to remedy any problem. We can interact to unravel any dispute.• Your five celebrity suggestions is our motivation, shopping ahead to pleasant feedback!Thank you very much!