Dongguan Sanju Plastic Products Co., Ltd. is located in Dongguan City, Guangdong Province, China. As a modern manufacturing enterprise integrating R&D, production, and sales, the company specializes in manufacturing optical lenses, lens covers, and precision injection molds tailored for related applications. Its product portfolio focuses on high-precision optical components and supporting industrial solutions.
Sanju currently employs over 100 professionals, with a core R&D team composed of experts in optical engineering, structural design, and project management. The production system is led by senior technicians in mold and injection molding fields, achieving precision manufacturing through process innovation. Leveraging this specialized talent structure, Sanju provides one-stop solutions covering lighting design, mold development, and component production, delivering full-process services from conceptual design to mass production.
In quality management system development, Sanju has obtained dual certifications in ISO9001, ISO14001 and IATF16949 automotive industry quality management systems, strictly adhering to international standards. With consistent product quality, its service network spans global markets, providing professional support to automotive and motorcycle lighting enterprises in China, the United States, Germany, Italy, and other regions. Its products are widely used in automotive and motorcycle lighting systems.
To ensure manufacturing precision and production efficiency, Sanju has established a comprehensive intelligent production matrix:
Through the collaborative operation of intelligent equipment and an experienced technical team, Sanju ensures compliance with both product development timelines and quality control standards.
Guided by the development philosophy of “Technology as the Foundation, Intelligent Manufacturing as the Driver,” Sanju Plastics remains dedicated to advancing automation and intelligent upgrades in production processes. By continuously optimizing talent structure, strengthening R&D investments, and deepening customer service systems, Sanju has evolved into a specialized service provider in the automotive lighting sector. It delivers highly reliable manufacturing support to the global lighting industry chain, empowering partners to enhance value and expand market reach.
