Shenzhen Top Grade Technology locates in Shenzhen, China. We specialize in the R & D, manufacture and sale of innovative laptop/tablet/cell phone accessories.Our purpose is to design and manufacture high quality, portable, useful and convenient assistants for laptop/tablet and cell phone users to extend the life of their laptops/tablets/cell phones and empower them to see, use, hear and work with laptops/tablets/cellphones comfortably, ergonomically and permanently.With a highly qualified team of designers and engineers, we welcome OEM orders.With excellent quality, favorable prices, timely delivery and dedicated services, we will win your trust to establish long term cooperation.