TD Tech Ltd. (hereafter TD Tech) was founded in Beijing in 2005. The company has R&D centers in Beijing, Shanghai and Chengdu and has more than 2000 employees, 47% of them master's or doctor's degree holders. It invests heavily in proprietary R&D and ecosystem cultivation where 20% of its annual revenue goes into such investment totaling 10 billion RMB per year. TD Tech has been devoted to the innovation of wireless communication technologies and products. Strong comprehensive capabilities to connect upstream and downstream sectors have made us a leader in the industry. The company has three business units: wireless products, IoT & 5G and terminal products. Our products and solutions used to dominate China Mobile's; 3G and 4G commercial networks, commanding over 60% market share. Then the company embarked on its road to the private network business in 2011. We are proud to have launched Witen - the world's first broadband multimedia trunking solution with TD-LTE technology. As of now, TD Tech's wireless solutions for private users have been widely applied in fields such as smart mass transit, airports, ports, and smart power grids, safe cities and wireless service network. In 2019, TD Tech took the lead to have released its 5G products to further empower its industrial users. With years of technical experience, strong talent pool and excellent operational system on its back, TD Tech is committed to becoming a global leader in private wireless solutions.