About US Xiantong conprise 2 parts, Shenzhen research and design center and Dongguan manufacturer center. Shenzhen, a city famous for its electronic research and development technology, Here in shenzhe, xiantong has a team of experienced engineers that has good knowledge in hardware circuit designning. In Dongguan, we have a manufacturing workshop covering more than 6000 square meters, equipped with 7 sets of SMT lines, and 2 sets of automatic optical inspection machinery (AOI), 20 units DIP ma...