Xiaomi Group is a Chinese investment holding company mainly engaged in the R & D and sales of smart phones, the Internet of things (IoT) and consumer products, the provision of Internet services, and investment business. The company conducts business mainly through four departments. The smartphone department is mainly engaged in smartphone sales. The IoT and Life sales products division mainly sells other self-made products (including smart televisions, laptops, artificial intelligence (AI) speakers and smart routers), ecological chain products (including IoT and other smart hardware products) and some consumer products. The Internet Services Department provides advertising services and Internet value-added services. Other departments provide hardware product maintenance services. The company sells its products in both domestic and overseas markets.