Dongguan Sulong Industrial Investment Co., Ltd., formerly known as Sulong Plastics, was founded in 2002. Headquartered in Dongguan City, Guangdong Province – hailed as the "World Factory" – the company has developed into a conglomerate with multiple subsidiaries over more than two decades, including Dongguan Sulong Industrial Investment Co., Ltd. itself and its manufacturing subsidiary, Dongguan Fenglong New Materials Co., Ltd. Currently, the company operates 6 imported twin-screw production lines, boasting a monthly output of 1,500 tons. It has established in-house laboratories and sample rooms, enabling rapid test results within 4 hours. With technical personnel accounting for 70% of its workforce and an average educational background of bachelor's degree among employees, the company is a production-oriented enterprise emphasizing technological R&D.
As a subsidiary, Dongguan Fenglong New Materials Co., Ltd. has been driven by technological innovation since its establishment in 2012. Specializing in the development and promotion of PC fiber products, it has secured multiple national patents in this field. The company has also obtained prestigious certifications including National High-Tech Enterprise, Specialized and New Enterprise, Innovative SME, ISO9001, and ISO14000. Its products have been accredited by authoritative domestic and international certifications such as SGS, ROHS, GRS, Gb/T29490-2013, and AAA Measurement Management System.
The company is a leading manufacturer of polycarbonate (PC) and PC fiber modified products in South China, ranking among the region's largest production bases for such materials. Its core product portfolio includes customized fiber-reinforced products with 10%, 20%, and 30% fiber content, which are comparable to imported virgin materials while enabling significant material cost savings for customers.
With over 20 years of experience in the plastics industry since 2002, the company has built a comprehensive production management system, demonstrating rapid responsiveness to market changes. It has formed a professional and efficient service team that provides 24/7 customer support, earning widespread recognition from clients across the plastics sector.
Company MissionTo empower China's manufacturing industry to lead the world through industry-leading modified plastics, and to pursue the material and spiritual well-being of all employees.
Company VisionTo become a leader in China's PC modification industry and realize the goal of building a century-old "plastics giant."
Core ValuesResponsibility, Growth Mindset, Achievement-Oriented Living, Result-Driven, Open Innovation, Collaboration, and Continuous Improvement.

