Guangzhou SYJK Automobile Products Co., Ltd is a critical subsidiary of Zonglin (International) Group, which has established many noted companies in mainland China, such as Zonglin Electronics (HK, Dongguan & Zhuhai), Zonglin Building Materials (Fujian, Hunan & Guangxi), and Zonglin Real Estate.

Guangzhou SYJK Automobile Products Co., Ltd is a private high-tech company engaged in development, production and applications of high and new technologies. Major product lines of SYJK include: parking sensor systems, visual line, universal parking sensor systems, high-end anti-theft systems, car-mounted bluetooth lines, and other high-end car-mounted electronic products. Located in Hengli Dongguan a noted town famous for manufacturing, the plant of SYJK covers an area of over 50,000 m². SYJK takes pride in world-class production and detection equipment for manufacturing electronic products (such as AI, SMT, MI, AOI, ICT, high & low temperature detectors, aging testers). Due to world-class production techniques and management, SYJK has met ISO9001 and ISO14001 systems.

Relying on global and self-developed technologies, SYJK has established long-term OEM cooperation with many Top 500 companies. In 2008, "Ironhero" an exclusive brand of SYJK was launched.Relying on global and self-developed technologies, SYJK has established long-term OEM cooperation with many Top 500 companies.