Shenzhen Tech Chain Technology Co., Ltd. was founded in 2011. We are a high-tech enterprise specializing in developing, manufacturing, and selling customized speaker, tablet PC, power bank, tablet PC case and so on. Our products are distributed to more than 60 countries and regions. With the research and development of high quality products, we can keep long term business relationships with customers from the USA, Europe, Australia, South Korea and some other countries and regions. The ...