Which companies only focus on research and development products, and the marketing department only puts some people in.

Canrui technology IPO.

Shanghai Canrui Technology Co., Ltd. (hereinafter referred to as "Canrui Technology") was established on September 3, 2005. With years of R&D accumulation, in-depth development of product lines and accurate grasp of customer needs, the issuer's products cover many well-known brands at home and abroad, including smart home brands such as Gree, Midea and Haier, wearable device brands such as rambler and JBL, financial security brands such as Ant Group, intelligent security brands such as Hikvision, industrial equipment brands such as Danfoss and Infineon, and Xiaomi, Chuanyin, Samsung, LG and OPPO. The company's packaging testing mainly provides services for self-developed chips to ensure product quality and delivery, and some of them provide packaging testing services for other customers. With the growth and continuous investment of the company's business scale, the overall production capacity and revenue scale of packaging and testing services continue to grow.