思特威：公司的主营业务为高性能CMOS图像传感器芯片的研发、设计和销售

Core Viewpoint - The company, Sitwei, focuses on the research, design, and sales of high-performance CMOS image sensor chips, which are widely used in various high-tech applications, contributing to the industry's shift towards greater intelligence and informatization [2]. Group 1: Company Overview - Sitwei's main business involves high-performance CMOS image sensor chips [2]. - The company's products are applied in security, machine vision, smartphones, automotive electronics, and industrial sensing [2]. - Sitwei aims to provide CMOS image sensor products that cover multiple application scenarios and performance requirements [2].