Dear sir,I;m Ecvv servicer,and very happy to answer your question.you can find how to buy on http://www.ecvv.com/help/.   Any questions,feel free to contact us,you can send email to support@ecvv.com. We will reply you soon.

You can send your inquirt to the supplier directly.Then the supplier receive your letter ,he will reply you as soon as possible .

 you can join my skype ,i will tell you detail.