Up to now, SINYUAN group has many several sub-companies. It has cooperated with some outstanding enterprises. All of the joint-ventures have their own independent board of the directors. 

※Ningbo SIL Gasket Co., Ltd (SIL), a Sino-Japanese joint-venture, mainly focuses on researching and manufacturing sealing accessories of engine, exhaust air system, refrigerating system and gasification system of automobiles and motorcycles.
※Chongqing SIL Gasket Co., Ltd, a Sino-Japanese joint-venture, is the brother company of Ningbo SIL.

※Industry Sealing Solution co.,ltd ( ISS ), is established in 2006. ISS specializes in the development, manufacturing, sales and technical service of sealing products. Our product portfolio includes non-metallic gaskets ,  semi-metallic and metallic gaskets; and including packing & packing rings. ISS focus in R&D, and focus on the continuous improvement of the manufacturing equipment, processing technology, quality control systems and products. ISS aims to improve quality as well as technology and cultivate talent to strength its role in the sealing industry.

※Ningbo SINYUAN Bur & Tool Co., Ltd., manufacturing carbide burs, trimming & finishing burs, scaling burs, surgical burs and steel burs.

※Ningbo SINYUAN Membrane Technology Co., Ltd manufactures high-performance inorganic ceramic membrane and membrane components.

※Ningbo SINYUAN Carbon Material Incorporated Company manufactures graphite materials as well as thermal conduction and thermal management materials, mainly applying to the field of new energy.